I was doing another meditation when all of a sudden i saw azazel sigil or part of it pop up and i was really confused because i’ve never summoned or even worked with a demon or angel or entity so can someone explain?
Theoretically it could be an act of the subconscious, perhaps you saw it somewhere long ago. I have that same issue sometimes, so I try to constantly check myself.
The other thing I could think of, is it’s possible he’s trying to contact you. It’s not that uncommon for spirits to reach out to others. Ask and find out.
Ask who
Azazel.
your mad like the rest of us. 
otherwise you wouldn’t be on this site. haha.