Ui/ux is honestly worse on android compared to something like ios. The playstore is honestly stuffed with ads and seems to be actively regressing in ux (the update apps menu is hidden behind like 3 layers of dialogues). Cost wise a used iPhone is probably a better deal than a cheap new android phone.
I used android primarily because I could install apps Apple basically doesn't care about (and after the 5th time gba4ios broke).
Well android phones dont have removable sd card slots anymore, the only way to transfer files is over the weird protocol that's slower than directly writing to disk, if you use pixel or Samsung youre already inundated with annoying ads. The ecosystem is pretty awful now. Installing a custom rom is a good idea, but depending youre phone model it could be a step down and if your on any Samsung phone with knox it basically irreparably damages some attestation fuse. Apple ain't much better. I might try a Linux phone next.