Hi there,
Im studying at Cardiff uni, and there are a few different football clubs you can join. So there is the main uni football society (one for womens football, and one for mens), following this some subject departments have their own football societies, for example medics football, geography football, law football and more. For the main uni teams they do try-outs at the start of the year, and to the best of my knowledge subject teams don't have tryouts, so anyone can join. Most of the uni's sports facilities are in Talybont, so not far from where most students live. When training is further or away games take place more often than not they hire coaches/mini-vans to help transport the team.
If you check out our Students' Union page
here you can find out more about the football teams, and they have their socials linked so you can see what they get up to.
Can I ask what subject you are thinking of studying?
Hope this helps, and any other questions let me know,
Grace - Cardiff student rep