Dude, you're 18. I'm over twice your age, and I know that at your age, I didn't have a clue about love. I knew what I thought was love, but it wasn't until I met my husband that I realized I was sadly mistaken. By the time I was 18 I'd been living away from my parents for a year and a half and had been supporting myself, had my own car, house, and all the rest of that jazz and had lived in various places around the UK and europe. I thought that I knew it all. In retrospect, I knew nothing, and I especially knew nothing about love.
I also think that you're trying too hard. You've asked what, 4 girls? 5? I've also learned from experience that if you try too hard to find it, it'll only hide itself even more.
Everyone is destined to have a great love in their life, Lucas. Yours will present itself to you eventually. You just have to be patient and aware. You'll know when the time is right.
Ok, you can think that. I thought the same thing until I was 24.
One day you will see what I'm talking about.