1) First download all the below apk at below link
MicroG-Youtube-0.2.12.203315
https://mega.nz/file/ugEEyDpB#
YouTube Premium_v15.40.37
https://mega.nz/file/6osT2Y6a#
YouTube Premium_v15.43
https://mega.nz/file/eldTwYKC#
YouTube-Music-3.86.51
https://mega.nz/file/79dglbLQ#