At the start of the pandemic I lived in a house full of people working at tech startups in Oakland. So I understand having no space as I worked/lived from my tiny room. But, I was able to leave the bay area, as were my roommates and now we all have our own places (some rent some own) because the same rent in Oakland was able to afford private spaces in other parts of CA.
So I empathize with your position. I recommend trying to move out of the locale that only allows you to afford an 800 sqft studio. Even the shittiest tech jobs in the Bay would allow for you to have your own 2 bedroom apt in other parts of CA. This is how you take advantage of the WFH opportunity as a younger person.