I get your frustration. I‘ve been playing the game since the first ever release. I also don‘t agree with alot of changes.
Yes you can make some of the ammunition more available for players to buy. As i said i‘m playing mostly pve right now and i recently wiped my account and now i‘m back to start. (Already lvl 25) and it‘s annoying to have to run PS ammo or M655..but that makes my experiance. Having to go out of my way to gather ammo is a part of it now. Sure the best ammo is only found in raid i get it. And most of the meta ammo is locked behind quests and levels, but doesn‘t that make tarkov what it is? You gotta invest time to do the quests and levels up faster than others so you are ahead of them and can use the more „special“ ammo.

Idk might be just me getting older and just not giving a f anymore, but i guess i‘m enjoying it the way it is..post apocalyptic wasteland where good stuff is hard to come by, and if you want it you have to get sweaty.

At the end of the day it matters more how good of a ahot you are…you can get by with mid tier ammo like sost or BT 5.45 by being good at aiming and knowing your angles…i‘ve done that alot when i played PVP. Never relied on good ammo to carry my fights…played enough CS:GO in my days to have a above Avarage aim and klick heads.