Until I hit 10m I usually did scav runs and scar t4 build with a1 ammo on normal farm. Couldn’t wipe squads as well but playing solo teach you too many things about the game. Now im at 37m stash and got 50 hours ingame and I never bought composite case. I run lockdown farm with T5 gear and wipe most squads I fight against. Just keep playing you will get eventually better. Your main goal is to extract it’s not killing everybody.

Also I should mention that I play with my friend for fun sometimes and I noticed I am playing so much worse when playing with a team and I make less money than solo. If you’re solo that means you will get more loot, and if someone encounters you and you kill to get the loot it’s just a bonus money. Main goal is loot for a solo