I know this is 2 years later, but since there weren't any legitimate answers in here:

https://github.com/pablouser1/ProxiTok

And for those of you who just have friends that insist on sending tiktok links and you just want to quickly see the content you can use:

https://proxitok.pabloferreiro.es/

I wish there was an app liked newpipe for tiktok ugh maybe one day