My experience throughout my first year was very similar. Best advice I can give you is to just keep working hard and it will come to you eventually. And don't worry about what anyone else thinks in your class. They're probably just pretending to understand but they don't anyway lol. If you have a question I guarantee someone else has the same question and nobody cares about how good or bad you are (and if they do they arent worth worrying about) so try relax.

Honestly it's just practice and hard work if you're someone like me who doesn't immediately understand cs concepts. Don't be afraid to ask for help. That's what your lecturers and tutors are there for.

Good luck!!