why can he build the mines so much faster
this is bullshit
everyone else has less seconds to make their first mines than mine
this game is corrupted and hijacked by hackers who have screwed it so only they can win
but i am sure you know this and it is your fault

TimofBorg altering game state in the way you describe isn't possible. Had a look at this replay, here's what I noticed:

• Killectrician went strike commander, you went recon commander. These commanders have identical movement speed but Recon com has slightly less build-power (8 instead of 10); this is not a significant factor in the experienced economic disparity.
• Killectrician placed their factory directly adjacent to their commander; your first factory was queued a full 9 seconds walk away from where you put your commander. This bad initial factory placement should account for any early game disparities between you.
• At nine seconds in, Killectrician's commander has walked over to their first metal deposit while yours has spent the whole time walking to build a factory.
• At nineteen seconds in, your commander is just getting started on its first metal extractor after walking back from its terrible factory position while Killectrician has had a ten second head start to build a metal extractor (8.5 second build time) and get a fifth of the way through a solar generator (7 second build time). Because Killectrician built their factory 9 seconds earlier than you they're also nearly finished building their first mason while you skipped a first mason and went directly into scorcher.
• At 44 seconds in, your commander is finishing your second metal extractor, while Killectrician is 60% of the way through his second solar generator. You haven't build any solar generators by this point. Killectrician has now exhausted their starting storage and thus their 10 metal per second income is now split in three between their commander, their factory, and their mason.
• At 90 seconds in, you actually have 14 metal income to Killectrician's 12, but you are energy stalling so you're only able to spend 8 of that metal while Killectrician can spend all 12. Also, your raiders are out of position to deal with Killectrician's first raid, and you haven't sent them to harass Killectrician either. They're just wasted sitting around and doing nothing.
• At 110 seconds in, you order your raiders to intercept Killectrician's scorcher. This is a full 20 seconds after Killectrician's scorcher first fired on your base economy; during this time it was able to kill three metal extractors, your mason, and a partially finished solar plant.
• At 140 seconds in, you have the economy from two remaining metal extractors and a reclaiming mason for 15 total metal economy, while Killectrician has the economy from four metal extractors and a reclaiming commander (on the rocks in the center of the map) for 24 total metal economy. As you stil have no solar colectors you can only spend 8 of your metal per second, while Killectrician can spend 16 of theirs. Killectrician now has a 15% advantage in metal produced (1587 to 1361) and a 30% advantage in metal used (1865 to 1380), but 40% of your metal used is dead compared to only 11% of Killectrician's. As most of Killectrician's economy has been invested in more economy, you actually have a very slight advantage in army value.
• You then send 3 scorchers and a dart in against six enemy scorchers, trading slightly unfavorably. At 170 seconds in, you've lost the army value advantage and half your army value is in fencers, which are bad at dealing with raiders in small numbers.
• By 185 seconds in, your remaining combat units except for one newly built fencer are all dead; your fencer died due to being click-moved into a scorcher instead of attack moved (so that it would automaticaly stop to fire once it got in range of the enemy), while your remaining scorcher died due to pursuing a retreating enemy scorcher (due to how scorchers' weapon works, a retreating scorcher being chased by another scorcher deals dramatically more damage than the scorcher chasing it). You still have not rebuilt any of your destroyed base economy, so you are still only producing 10 metal per second, 8 of which you can use; you haven't wasted any metal yet, but you've now used 900 less metal than your opponent.
• At 220 seconds in, you send your commander in essentially solo against four scorchers and an enemy commander (your fencer doesn't do enough damage to meaningfully contribute to this fight while your own scorcher lies out of range until your commander goes down) and predictably this results in your commander dying. At this point you have nothing but a factory and 2 usable metal per second (because your only energy economy is the base 2.0 energy you get automatically), so the game is essentially over.

You put yourself at a slight disadvantage at the start with a bad build order that wasted valuable time by walking too much, but the game was realistically decided when you took 20 seconds to do anything about a single scorcher destroying your economy, and a combination of engaging in unfavorable trades with poor unit micro and not rebuilding your economy guaranteed that you couldn't come back from the poor position your lack of attention put you in. If you'd like to get better, I'd suggest watching for very obvious and avoidable mistakes you're making rather than assuming the only reason you could possibly lose a match the matchmaker says you had a <2% chance of winning is because the opponent did some cheats that literally aren't possible in the game engine.

quote: everyone has to start somewhere stuart, sheeesh

I only went with the full point by point dissection because of the cheating allegation. I wanted it to be unequivocally clear he lost because he played worse from start to finish and the other player had no unfair advantage.

Didn't realize I was falling behind on army early game because I over-invest in economy. In a different game, I noticed my opponent was able expand without solar while having a bigger army. Is making wind generators while creating a grid that much better than simple auto-solar placement with CTRL?