I use #GrapheneOS, which does a fair amount to curb some of my biggest problems with default #Android.
...but at the end of the day, the ecosystem is built on behalf of & in service of advertisers & spyware manufacturers, so problems like every app spamming notifications persist.
Google has tried to fix the notification spam (probably to prevent competing advertisers from encroaching on their market share), but ended up exacerbating this problem.