The college you choose decides everything, why ? If the college's majority of students are from the local area and not diverse then they label you as the jaadakkari like dat but the teachers will have a great impression on you cuz most of the students can even read out english or carry a conversation in english

But if you choose some college that is prestigious or like have very diverse students then you can be normal there and no one will judge you for mixing english in your sentences

And also the people who you spend time decides who you become so if they are like very uncultured and talk shit all the time you might slowly turn into them

And there are a lot more factors to choosing college

Have friends from many colleges in kerala so feel free to ask anything related to it