Skip to the end for the actual question(s) if you don’t want to read this

So I have two iPads. One has all my shit on it and is like…164GB or whatever the hell. It has a lot. Thing is, fucker is from 2016 so it basically does not charge if I’m using it and will die quicker than when it’s not even plugged in, and takes 3 full days to charge even if it’s off or in airplane mode.

The other one I got from my mom. It’s from 2018 (not much better, I’m aware) but it is much faster and charges way better. Problem is, it’s 32gb of storage. I got rid of every app on it except for 2, chrome (I refuse to use safari) and procreate (I am an artist) and it still gives me alerts every time I even look at the iPad saying “iPad storage is full” Every time I google how or if I even can, it gives me such…weird? Responses. My brain is stupid and so am I and I just cannot seem to understand what those responses are trying to say. So I ask you guys, as I know you can explain it to me like the 5 year old I am

Can I add storage to my 32gb ipad? Would getting an SD card of some kind work? Would I be better off selling my two iPads and using those funds to find a better one with more storage?

Thanks if you read all that or for answering in general!