Literally TODAY someone I know installed an application called "PDF viewer for android" that had a green adobe icon and it started wrecking absolute havoc on their phone with pop ads and redirects to scam support sites.
The AppStore is full of this shit.
I feel you. Ive been going through this loop over and pver again. Ive landed on the fedora based Universal Blue for this reason. Bluefin for my desktop and bazzite for my gaming PCs. Sometimes you just want your system to be stable and get out of your way and i really appreciate thay about fedora.