summer after 2nd year with no internships

I'm an undergraduate at a UK university, what should I be doing now to make up for this? I feel like most people in the same year have at least 2 internships already and I haven't applied anywhere because I have no work experience and would probably mess up the interview because of anxiety.. I am also thinking of doing a masters after I graduate.. would the lack of internships be a problem / what would be good things to do now if I wanted to go into academia?