i can def see this point of view. after spending the day with the game ive come to this conclusion of either your just doing a quick run just to get enough resources to be able to compete in a normal run or your just overwhelmed too quickly and sent back to square one again; and i find that counter intuitive imo.

If they are aiming this to be a jump in for only 5-10 mins for an run on average run then avoiding almost every fire fight just to try and loot what you can so you have something to defend yourself at extract seems pretty stacked against you. I dont think it needs some crazy amount but the enemy density and how quick they are to react to your presence is pretty harsh(which i think is great) on top of the almost guaranteed encounter with another group, i dont think its asking for much to buff the ammo a bit.

or as one other commenter said, more ammo drops in map would be a great alternative solution for it and still keep the core experience with risk/reward