pets as a student here

so i’m thinking of adopting a cat, the only issue i have is that i know it’s a huge commitment but i love cats so much and i could really benefit from the company of one.
i just want to know how expensive it can be and if it’s doable as an international student
also another concern would be its care when i would have to leave for summer break or any other break for that matter
id appreciate some advice from cat owners who are also international students 🙏🏻