Finding friends in Ireland usually isn't hard and Trinity also provides quite a lot of opportunities for mingling with locals and other exchange students. A good tip for Trinity students is joining one of the main
societies – clubs which unite students with common interests in subjects from
hiking to Judo to SciFi. Joining a society usually doesn’t cost more than 10
euros and you’ll get invited to a variety of events, depending on the purpose
of the society. Additionally, there is the S2S mentorship program as well as the 'international room' where a variety of activities will be hosted during the year, including get-togethers for students who are new to Dublin.
Also outside of university, Irish people are relatively easy to get to know and the lack of language barrier is nice! Pub nights with friends and colleagues are also definitely a great place to get to know new people.