GCSE 2020 Results StressWatch
I think it's great you feel able to speak out when you're having a tough time, that's a very mature skill to have. Whatever your results are, you're still unique and valuable, and you still have beautiful talents, even if they may not be academic ones at this point in time. Would you be able to talk to a teacher about the stress you're under or something? I know not all teachers are sympathetic but most should be, and they want to help you learn.
As you're getting pass grades in several subjects (you didn't say how many, but all of your 4s and your 5 are passes) you should be able to get into a sixth form college, which gives you a fresh start. Obviously a pandemic is a pretty rubbish time to have GCSE stress too, but you do have options, so don't give up. Maybe figure out why you're getting low grades and you can fix those problems going into sixth form. If you want to talk more, I'm still here :-)