You must be spamming the wrong units,
![ID](/img/flags/ID.png)
![rank](/img/ranks/2_0.png)
hellatze.
![](http://manual.zero-k.info/unitpics/corape.png)
Start spamming Rapiers! They've been incredibly powerful and spammable a year ago. Since then I only remember three huuuuge buffs (first when gunship overhaul happened, second overpowered missile update, third a damage buff nobody asked for) and only two small nerfs (one after overhaul, second was engine-caused).
Just make sure not to suicide them, play safe, to use their extreme mobility and know that they are an extremely snowbally unit against air, PROVIDED you have enough Rapiers - otherwise they die like flies. Oh and stay away from aoe weapons when your swarm is clustered.
![](http://manual.zero-k.info/unitpics/blastwing.png)
For early game you can scout with two Blastwings. If you're unlucky they'll be shut down by fighters dealing no damage (you lost 110m), if you're lucky you will scout 2+ enemy factories and destroy a couple windgens, or at least close a few solars. You also have the potential to scout (and instantly counter) a raider rush. Remember to set them to Hold fire to prevent them from suiciding on lone units and manually selfD them (take your delay and their flight speed into account).
![](http://manual.zero-k.info/unitpics/armbrawl.png)
For midgame you can use Brawlers as allterrain-artillery. Just kill all defenses except for 1k+ range-AA and Anni/DDM from a distance. If you can, place it on a mountain for safety and a range bonus. The unit has enough HP to tank a few shots - it might be the artillery unit with the highest survivability. Anyway, make sure to repair it afterwards.
![](http://manual.zero-k.info/unitpics/corvalk.png)
Valkyries are another nice mid-lategame unit. Especially if enemies are distracted, didn't invest enough into AA and/or have their fighters out of place. Just drop a high-dps unit into enemy eco. Riots are probably the most common.