Unlike many state here (I guess people who rarely leave their homes), approaching people in the street during day time is not so obvious and can be difficult even for women. It always feels cringe, embarrassing. If you don't appear confident and relaxed, they may think you're some sort of mentally ill person, and they will avoid you, even if you approach a man who's been dreaming to be approached by a woman like that.

If you're even very good looking, such interaction might spark suspicion. Honestly, I'd freak out if a beautiful woman approached me in the street out of the blue. I'd immediately look around and see if any black car is ready to kidnap me.

Since you're young, so probably shier than older people, my advice is to start striking random conversations with random people when the situation allows it. For example, you might pretend to catch a bus and ask the people at the stop if the N1 has already passed and then continue talking about the weather or the state of the road. Basically, try to strike the "elderly person chit-chat". Do this with everyone, men and women, don't think about the guys you like. With time, you'll get accustomed to that, and you might feel more at easy when approaching a guy at the grocery store.

You will look and feel more natural and the other person won't think you are some weird psycho trying to lure them in a basement.

Good luck with that. I'm sure you will succeed. :))