Applied Math Major here. I am desperate to find internships/research programs for the summer

I did not get into the summer math program that I applied to. I barely learned about summer research programs in late march and all the deadlines have passed. What should I do now? I have no work experience as a student in his junior year and my gpa is below 3.0 (i made ALOT of screw ups in the past during my time at community college before transferring to this unviersity). I’m very depressed that I didn’t get into the program but at the same time, I’m really scared that I won’t get anything done in the summer at this rate.

Look at indeed.com, there are still internships available (at least in the Boston area, not sure where you are looking).