YouTube is recommending a lot of duplicate videos.

[QWERTYRDSDFGsdfghFDYDEFG]

I want to know how to solve the problem of not seeing videos I've already watched on the homepage. This issue has been bothering me for a long time

English is not my native language; please excuse typing errors.

[ImprovedTube]

hi! @QWERTYRDSDFGsdfghFDYDEFG general > mark watched videos & hide watched videos