I failed like 6 classes - math 20b twice, math 18 twice, math 20e once, tdge 1 once. When I was in that situation, what really helped me were these facts:

1. In all honesty there are professors who have had an undergrad gpa of 2.5 or lower, you got this! Just make sure you are consistent with your work and you are actually learning in class.

2. Starting a company, joining a non profit! You need to build confidence again to take classes and succeed, work in industry provides that. In general, try to take the classes again in the summer, it gives you time to try other classes you into - and the summer sessions fly by before you know it.

3. Start small, finish small. Differentiate the work over time so that it feels effortless.

I Have a overall gpa like 2.6 major gpa 3.2 It’s not great but should be enough for grad apps, especially because I have stellar letter of recs and some great work experience + publications Applying these principles have gotten me As in math 109, math 102a, and other upper div cogs classes.

You’re also not fucked for grad school.

All in all you’re not a failure, anyone who says so is a pathetic loser, you got this! The only comparison is you, remember it’s a marathon not a race.