Hey I'm looking for manga could be regular romance manga or yaoi anyway I'm looking for some romance manga with the trope of someone unpopular being confessed to but they don't believe its true or they think that it's a joke and they're just kind of dense about the other person's feelings

My Hot Friend Is Glowing

Try the 'Oblivious to Love Interest's Feelings' tag (if you haven't tried it already)
https://www.mangaupdates.com/series.html?category=Oblivious%20to%20Love%20Interest%27s%20Feelings

Thanks so much!
I actually have read that manga you suggested (hot friend is glowing) it was hilarious I loved it! But I'll def check out the list of tagged manga!