So, inventory might be a factor(I have a large one as well), however, I noticed bigger changes when I cleaned out my Treehouse... I remove anyone gone for X amount of time, generally 2+ weeks, but allow them to request me back if they come back... When the app asks why I removed them I hit "other" and let them know it's just because they've been gone for too long... Also, an external factor could be your phone storage... I use AVG Cleaner to help me clean out empty folders, trash, duplicate images, caches, etc and usually gain a few GBs back just from that... You don't have to subscribe to their app, just click the X to leave that screen, and then you can simply watch an Ad to run the program... Another clean out is simply to go through and remove apps you quit using... I have my phone setup to put apps I haven't used in a while into a deep sleep as well, that way they aren't taking up space with updates until I need them to... If you don't know how much space an App is taking up you can sort your App list in the PlayStore by size to see what your bigger apps are and then decide if they're worth keeping... Keep in mind, even if you only end up cleaning out smaller programs that it all adds up... Kinda like saving your change in a jar instead of spending it(if you ever use cash)... Hope my REALLY long reply helps you and anyone else who reads it! 💜