Your question isn't clear to me but if you are asking that you are not understanding the BSc 1st year course well due to the problem in understanding or comprehending English then you have two ways left.

1) To try studying English and learning the language along with the course. Due to COVID you have got a lot of time. So you can invest that time in studying English from different open sources in internet.

2) If the 1st point isn't possible for you or you are not willing to pursue the idea I have suggested then you should shift college or do something so that you can learn in the language you are comfortable in.

Always remember Language doesn't matter but what you are learning matters. Although learning English is helpful because you will get a very large number of authors writing the most important books in your field or it will help in your higher studies by a number of ways but that doesn't mean without English you can't do anything. The point is it will get harder for you to sustain the higher education in any local language.

I hope my answer helps you. All the very best for your future endeavors!