Internships are only useful if you can get a good brand name company and have the opportunity to network.

In your case with a weak degree from SIM, no good company will bother to accept you for internship as they only want the best from the top unis. All you will end up with is lousy cheapskate small company who want to make use of you as cheap labour.

This kind of internship in SME will not help at all as the company is only interested in using you being cheap for low end administrative task. Zero value in building CV.

Try going for commission type job in generic low end sales to get some experience if really no choice.