I was often in the situation that I fought every enemy but either didn't have enough cash or the available weapons were pure crap and I couldn't progress much f

I was often in the situation that I fought every enemy but either didn't have enough cash or the available weapons were pure crap and I couldn't progress much further, because I didn't have the equipment. Since that happened way too often and I hate it if my success depends on dumb luck of weapon "drops", I don't play anymore.