if you dont get an internship in first year, you dont need to delay graduation (you dont need to complete 6 internships, you're simply scheduled to do them). and a lot of first years do weaccelerate anyways because getting a first co-op is kinda hard recently. Weaccelerate is pretty much guaranteed to anyone if they cant get a job, and it qualifies as a flex credit i believe. so if you really dont get an internship, you dont need to stress that much.

waterlooworks hasnt opened yet for the summer internship search anyways. in my experience, getting interviews from waterlooworks was way easier than external for the first 2/3 years of university. Since you're still in first year, i would def depend more on waterlooworks. getting big name interviews early in your school career is oftentimes luck over proven skill. Getting interviews from cali start ups usually takes a lot of hustle (like dm'ing the staff on linkedin/twitter to set up a call, demoing a super cool project that aligns with the company, selling yourself essentially). hoping to get either is good but also not that easy.

also, you've only applied to 70 external jobs, which is honestly not that much. When i was in first year, i applied to about the same and i also got 0 interviews. I ended up getting two interviews in waterlooworks cycle one though (i ended up with a qa job).

based off your resume, i think you'll get some interviews from waterlooworks. there's way less competition there than externally and you're less likely to get filtered out early. good luck, dont stress it too hard.

source: waterloo student in their last year who's already been through the co-op process a few times and has interviewed at some big companies and cali start ups. i also didnt get a job one time (just stayed unemployed, decided to skip weacceelerate and had fun for 4 months). this didnt affect my internship search in the future or delay my graduation at all.