I feel like a slut

So I'm 21 and in university. After my first relationship ended (almost 2 years ago) I kind of explored my sexuality and meeting up with people from tinder etc.

In university life you felt like you know a bunch of people and mutual friends. I meet people randomly at times, went on dates and hooked up here and there because I felt a connection with them. Then it was just a one time thing or a casual.

Then this happened several times and now when I feel like I'm ready for a proper relationship, no one would want me. Because now if I go on a date with someone, they are likely to know someone I hooked up with.

This makes me feel like my behaviour is a turn off and they see me as a "slut". How do I overcome this? Am I a slut just for having fun?