So, let me try to help you find the way of getting ranked back.
Replay from one game: you started with factory and 3 caretakers. You were out of metal before you finished building the second caretaker. Why do you make 3 caretakers at start when you have 7,8 metal per second income? Each caretaker uses 10 metal per second, also your factory uses the same. That means you get 7,8 but spend 40. Those caretakers were metal away from units. A little, but even a little helps.
You also wasted metal trying to morph your com at base while building winds and units. Then you made 2 totally useless energy pylons next to each other, I'd love to have an explanation for that, but you having played hundreds of games must have a very good reason for them, and also my brain probably couldnt handle the truth of it.
Then you started making storages when you had no metal stored anyway, with +11,5 metal income and -58 drain, huh? All the while still desperately morphing your com for looong minutes. Oh, and you really had not even used your units, 4000 metal worth of units just standing around. That includes 2 lances. Btw, why lances at the front and smaller units behind them? (I do know, dont explain please)
Next came some 2000 metal worth of raising terrain project in your base... while still morphing com and building units, with 13,5 metal income. You were watching your terraforming project for minutes and giving no attention to your units. You had 2 good players with fleas between enemy and your lances, you could have done a lot of damage, why didnt you?
After your terraforming was completed, you started another base terraforming! But this time you dug a hole, what was it, another 2000 metal project maybe. But you managed to store 150 metal between that, so I guess the storages were worth it. Not.
It took until minute 13 for you to use your units. You moved them back while your allies pushed. Speechless. Meanwhile you were building scylla and terraforming more walls because of enemy bb I take it. For some reason you left a hole in your wall. Btw you dont have to make so thick walls, they cost a lot more than a narrow one. Also you dont have to supervise your terraformings, I know it looks pretty freaking awesome, ground going up, ground going down, but did you see the big energy shield ball moving towards the enemy? Imagine your lances moving inside that ball, laying waste to enemy instead of being safely back home pointing their barrels away from the enemy. (Ok, you did move units later, but Im not gonna delete my text. You microed your unit for few minutes).
Your playing is chaotic, you dont understand what going on, you dont know what things do or how the game works(too many caretakers, storages for what?, big ass walls, the pylons??? Idle units, com morphing at base...).
Did you press f4? Understand what the circles and colors mean? Try to make narrow walls, there were a lot of them in that game for example, just draw a line and raise, no need to make a circle and then raise terrain. And if I remember right, hold alt while placing bertha for example, then it raises terrain only under the bertha with mouse wheel or something like that.
Also maybe buy keyboard with , and . keys, surely would make your texts more tolerable. Oh you have? Then use them more. A good start.