No, never do it. And I mean never. People will never accept if you just approach them, no matter how good your intensions are. I'm 28 and I tried it on different universities, language schools and other institutions because I had zero friends too. Then I just learned that it is my fate as an incel to get rejected by everyone and the only way for me to have friends is if someone approaches me and want to be friends. But I'm bent on revenge so I just reject their asses back and give them a taste of their own arrogant medicine if they ever approach me. People also find it weird if you just approach them (again, no matter how good your intentions are). There needs to be a natural reason, like if you're in the same class, same club etc... Just don't approach anyone randomly... You'll regret it.