Embarassed, Confused

NSFWI want to start off saying I don't know if this is the right place for this, but I'm really on edge and I want to share my thoughts somewhere. So I would consider myself bicurious. I'm in college and its been a while since I was with anybody, let alone another man. Previously I'd only been with a few guys and I'd only fucked one of them. So a few weeks ago I was really horny and I decided that I might want to try being with a guy again. So started looking at craigslist personal ads. I knew it was sketchy/dangerous but I just wanted to check it out to see who was in my area.So I found a guy who said he wanted to meet up and blow someone and I thought that sounded like a good place to start. So we messaged back and forth, exchanged pics and talked. We were scheduled to met up and when it came time I got too nervous and told him so. He said it was fine and we could try another time. Fast forward to a month later, I hadn't contacted the guy since and he hadn't contacted me so I assumed that was a dead end. So one night I was drunk and horny and I found myself on craigslist again.I found a guy who had an apartment not too far from where I live so I messaged him. Again we exchanged pics and agreed on a time to meet up. However, this guy said that he wanted a top and having only ever topped before I thought this sounded right up my alley. He said he was into the anonymity of it which ind of threw up some red flags for me but I was horny so I just went with it. He told me he wanted me to come over to his apartment where he would be naked in his bed, and we could get right to it. Again, red flags but I wanted to go through with it cause he was close, and decent looking.I was nervous as hell on the way to this guys house but I kept telling myself to just keep going. So I got to his house and went inside and stripped down. I went to the bedroom where he was waiting and went to put myself in. And I went soft. So I sat there trying to get hard but I just couldn't. Every time I would try to enter I would go completely limp. This just made me even more nervous, sitting here trying to get it up in the dark. So I just told him, "I'm really nervous, I don't think I can do this tonight." And he said, "Hey man it's cool. You're really close so we can try again later." So I quickly put my clothes on and left.As I headed home I couldn't believe what I had just tried to do. I felt bad for wasting this guys time, embarassed because I couldn't get it up, and disgusted with myself for trying to fuck some random dude off craigslist. I got lucky that this guy wasn't some creep and I know I took it really fast, barely communicating with him or building trust before heading over. So now I'm sitting here, super anxious and I just want to share my story with somebody.