Desktop (windows&linux) + android :
Freetube
Grayjay
android only :
newpipe
tubular (fork of newpipe)
pipepipe (based of newpipe)
Browser :
Invidious ( the least reliable, probably the least 'private', best instance yet is inv.nadeko.net )
piped (never worked for me)
try them and see what suits you ( I use almost all of them 😆 )
some of these projects support more platforms other than YT.