[Suggestion] An item trading/conversion system

I know this isn't the first time someone suggested this, but I also know that I'm not the only one with this issue : I lack pokeballs (23 total right now) while I'm flooded with healing items that I have no use for (1500+ and counting).

Some might have the opposite issue and might throw away pokeballs, but everyone plays the game differently, so everyone has their own storage problem.

As a F2P player, i don't raid much, but I do catch almost everything I encounter. Or at least I try, because for the past months pokeballs scarcity has increased a lot (for reference I hadn't run out of pokeballs since 2017, but I think it'll happen again tomorrow).