If this feeling is due to a particular module, then it is best to discuss it with your Module Leader as they are best placed to help you with alternative learning strategies. If it's University learning in general, you might want to talk to your Personal Tutor who can look at things more holistically and help you understand why you are struggling.
It might be that you are dyslexic and never knew or you just haven't been given the opportunity to develop your learning skills. For advice and support, contact the Disability and Inclusive Learning Advisor on firstname.lastname@example.org or pop into the Student Hubb in Emrys Jones. Be assured at RAU we want every student to reach their full potential. You may need to push yourself, but we are here to help you.