20Y old female! Needs a glowup!

Hey guys so I have been always insecure about my face and body since childhood . I was brutally bullied for my face and my body when I was in school. Last year I got diagnosed with pcos and hypothyroidism which caused weight gain in my drop year (it's not severe still it shattered my confidence). I am a real noob in makeup and skincare and other things.

I really want a glow up . Any suggestions can be helpful .