Salaam alaykum Faiez,
You can’t get married without your parents blessing.
You have four options:
1. Find someone who both you and your parents agree is a good match.
2. Find a match who you like, but they don’t - you then have to decide if this person is worth it to you to be patient and convince them.
3. Marry someone your parents like, but that you don’t - in this case, you have to spend the time to try and turn them to your perspective while learning the ins and outs of a relationship. If you don’t change them, your kids will hold you accountable if they turn out like mom.
4. Lead a celibate life.
You seem to believe option #1 is out, and so too is option #4. You have either option #2 or option #3. I always choose option #2 because I’m not relying on myself to change my parents opinion - I’m working to follow the sunnah, so I turn to and expect Allah subhaanahu wa ta’aala to give me what I’m requesting if it’s good for me. If my intention is good, the girl is good, and the future is bright (only Allah knows), I’m confident it’ll work out. If not, it won’t.
So I wouldn’t stress too much on this. As the saying goes, “Do your best, and leave the rest (to Allah).”
Siraaj