Am I doing something wrong with those girls? I feel like I'm more successful than I was in the past but still not able to fuck those girls.(21F, 18F, 19F, 17F respectively. I'm 20M)

1 girl) I had three dates with a girl: kissed at the second and the sexual tension was really high. I proposed her two or three times to meet at her place (cooking together, eating together during a rainy saturday) and from now then she seemed to be less interested. I moved on but then, as I was bored, I met her a fourth time and asked what she thought about me: she showered me with compliments but didn't know how to answer to what she didn't like about me lol. However, it looks like there isn't sexual tension anymore.

2 girl)Second dates she gives me an handjob (her first time) but don't want to go further during the third date (I only wanted her head lol). She looked for early commitment but after the third date, as she told me she wanted to go slowly, I told her the same about her asking for committment. As she fears abandonment she started to write me texts like "I don't want to lose you bla bla". Very cute but as she doesn't trust me/doesn't feel attracted (probable reasons why she doesn't want to fuck) I don't really know what to think lol. Actually, I told her that as she doesn't trust me she will be as the other girls and nothing more than that but if it happens, it happens.

3 girl) Had a date with her, she proposed to meet again, I messaged her after three days and she went cold af. Tried to arrange a date but she was "busy" so I moved on.

4 girl) Blowed me but then wrote that she sees me only as a friend.