How can you prove yourself when you are looked down upon?

Earnestly and meticulously do the work that should be done and the responsibilities that should be assumed. This is not to prove to others, but to be strict with yourself from your own responsibilities. In life and work, do everything you should do, accumulate work experience, improve your technical level, and your ability will go up accordingly. At that time, others will not look down on you. You don't need to prove yourself deliberately, as long as you work hard, time will prove everything.