I'll just note that you first issue, with updates being delayed by 4-5 days is a general F-Droid issue and not specific to NewPipe. The delay exists, because

I'll just note that you first issue, with updates being delayed by 4-5 days is a general F-Droid issue and not specific to NewPipe. The delay exists, because F-Droid builds every application on their own server and that takes a while. You could search for an alternative repo that just pulls the apk from github (maybe Izzydroid?), or host one yourself.