These channels have content that you will find quite insightful and useful, whether you're just starting out or you need general design information.

AJ & Smart

https://www.youtube.com/watch?v=t0aCoqXKFOU

Figma Design Channel

https://www.youtube.com/watch?v=BaXZOpf7P9A

Alexa Herasimchuk

https://www.youtube.com/watch?v=Dw_XDeCrtRE

Design Gal

https://www.youtube.com/watch?v=SaXCpSiHvcI

Ran Segall

https://www.youtube.com/watch?v=_4cW79vF1mU

Femke Design

https://www.youtube.com/watch?v=NcQJjbFxTos

Design Sense

https://www.youtube.com/watch?v=5RluSnRPRbI

Design Course

https://www.youtube.com/watch?v=HVPfOq5X02g

Anthony Conboy

https://www.youtube.com/watch?v=_K06Dni-RE4

Sharon Onyinye