Hi, catastrojb, welcome to GB!
There are plenty of us who were once where you are now, and it is scary, but think of it as an adventure!
I don't know where you live or which uni you are going to, but they are bound to have some sort of LGBT society or support available, so get in touch with them.
There aren't as many GB meet ups as there used to be, but there's plenty of other things going on if you look in the Meeting Up section and Commercial Events, although these tend to be mostly in London.
There's also Meetup: https://www.meetup.com/
where you can find all sorts of social groups.
It's best to start meeting people and make friends, gain some confidence and then worry about dating etc.
But when you feel brave enough, online dating is a thing too these days