You do not have to buy tickets for the freshers events, however if you feel like you want to go out then you can get them and you should be able to sell them on if you don't feel like going on the day. Maybe see if you can find any freshers group chats or society groups on Facebook, usually people on there will talk about which freshers events they are going to and then you will have a group to go with and will be able to meet some people.
Everyone will be in the same situation at University as most people do not know anyone else, so everyone makes a big effort to make friends, this makes it much easier to meet people as everyone is much more open to forming new friendships compared with how it is a school. You can join societies, meet people in your flat and make friends with their friends. Try to get contacts from people when you meet them so you can arrange to meet up again. Sometimes it takes a bit of time to find like-minded people, but that is okay, you will find them eventually.
Evie (4th year medic)