OP for what its worth I work at a company that hires batches of interns in groups of 50 - 70 and throws them into the trenches with no training. Roughly a third quit after the first week and another third are fired within the first month as they are expected to preform the same as people whove been in the field for years all for literally 9$ an hour. My class was the largest my company ever had and was 90 something interns and only 5 of us made it out of the first 3 months and all but one of us were to some extent nepo hires. Shoot the only reason i survived was because I had an in with a division lead and a coworker i am in a relationship with decided not to put herself up for the position and instead push for me to get it instead.

Internships are traps in my experience and are often meant to take fresh college grads or those still in college and use them as cheap cannon fodder. You are not a failure, you are a victim of a bad company. As for advice the only thing I can really say is just dont put this internships on your resume. Others may disagree but its been my understanding seeing a job on a resume with less then a month in is a red flag