20M in uni

I'm someone who before uni had no sexual or romantic experience. After coming to uni I ended up getting a big glow up (lost 8-9 kg over 2 months - although in an unhealthy way, fixed my balding issue for the most part(finasteride and also toppik temporarily), started wearing earrings which get complimented a decent amount, fixed up my beard, better clothing sense) largely because I had some really good looking stylish guys in my flat so I tried learning from them, took a lot of work but I'm proud of the change

I notice I get a lot more looks than before, and people have straight up said or alluded to that I'm good looking fairly regularly. Even a few days ago a guy that I saw a while before said how girls in a group he was in before thought I was a fuckboy and that they thought I was "kinda hot". I've also sometimes been hit on by guys and girls. Istg just yesterday I met a girl for the first time in my badminton club and she was eyeing me the entire time. I played spin the bottle on Halloween with a small group (about 5 guys, 3 girls), and 2 of the girls got asked who the fittest guy in the room was and they both said me

But the issue is, this almost never translates, I've been in uni for 2.5 months and had play with just one girl (one of the girls I played spin the bottle with), and that girl had to literally say to my friend that she would be down to fuck me.

I just don't get how to escalate or get the convo in that direction. Like what do you say? How do you go from a regular conversation to flirting to making out or fucking? How does it look irl? Because with some of my friends it seems to just happen all of a sudden, they just give off that vibe and the girls catch on somehow. I can make conversation with people easily, I can make them laugh etc but I can't create that sexual tension that I see a lot of people do. I think it's partly because I almost feel guilty or shitty flirting with girls because it feels like I'm about to just do a massive shift in the convo, it makes me feel shitty expressing sexual desire, although I know that's stupid.

How do you guys do it? And most importantly how does it actually look in practice?