What to do about my job situation?

So iv been tryna get a job for a while now.
Iv had interviews but just get rejected.
Iv got 2 more interviews one tommorow for waitressing at soho house white city and the other on Monday is for a carer job for an agency.
The thing is iv had other job interviews for these kinds of jobs recently but got rejected so make me not wanna go for it.
Also my parents telling me not to go for them saying that I can't do them and I feel like they just wanna say told u so when I don;'t get the job which puts me off going to.
They say that they just want me to get any job as long as they get their money but whenever I tell them Iv got a job interview for a job which they don't think is good enough they just get annoyed and try to put me off it.
Iv had jobs before but not for long so now they think that I can't keep a job.
I'v got a degree in computer science which is what I should be doing but can't get a job in it so that y iv been going for these other jobs but can't get them either.
So what should I do?
Should I still go to these interviews even if don't think that I'll get them?