I fell like sometimes girls aproach me but im not sure if it is true

Once i was walking at a super market a bit behind this girl and her friends, she looks behind, maybe to me and then come to my left, we walk a bit "toghether" and than she leaves

The next girl (another one) was near me at a bus stop with her friend and i hear them say " yes but a bit depressed" which might refer to me, in thath moment i was depressed and i cried like an hour before coming to the bus stop and than i hear another girl say "i have to remember you thath you arleady have a boyfriend" and the other girl says just sssshhhh laughing They might be talking of other guys, who knows, i tink it was refferred to me because they came talking near me and also there was no one else at the bus stop

Another girl kinda tried to talk to me when i was walking in opposite direction to her on the sidewalk, at first it looked at me and keeping eye contact, than she came closer to me like very close and than i just keept walkiing forward because im way too shy

What do you tink? I tink the last girl was really trying to talk to me, but im to scared to start a conversation, also i noticed thath girls tends to make me understand thath they want to me to talk to them but they never start a conversation (this happend with a girl thath wanted to be only a friend)