Retargeting the FACE??

Hello, I’m really stuck with retargeting the Metahuman ‘FACE’. I’ve been searching for many tutorials online to attempt face retargeting because, as it happens, I imported one Metahuman and all the body/face movements worked well until I decided to put another Metahuman, and it just doesn’t work well as the previous one as all the animations are imported for the previous metahuman. Is there any YouTube tutorial that I can follow?