Browse big tech no account needed...

Twitter:

https://nitter.net/

https://fritter.cc/


YouTube:

https://newpipe.net/

https://freetubeapp.io/

https://libre-tube.github.io/


YT Music:

https://github.com/vfsfitvnm/ViMusic


IG:

https://www.picuki.com/


Reddit:

https://play.google.com/store/apps/details?id=ml.docilealligator.infinityforreddit

https://www.f-droid.org/en/packages/com.cosmos.unreddit/