just from a quick browse of your page i can already disprove your claim about not being into cool music. how can you like bjork, samia, and velvet underground and say you don't have taste? maybe you just hang out with so many other cool people with interesting music palates so it seems normalized to you, but that just means you're someone who surrounds yourself with interesting and like-minded folks!
instead of focusing on external factors - how someone might perceive you, how you think you compare, why someone might or might not like you, focus on what you like doing, what excites you and motivates you, and people who resonate with how you do you will naturally gravitate towards the things you might share.
if you think you're lame, you'll feel lame, and then you'll act lame. it's a feedback loop. when you do the things you think are cool regardless of what anyone else might have to say about it you will become cooler because you're actually just being yourself