how can i share my gig in request section, where buyers see my description and hire me for goals…
You can’t. Buyers cannot even see what is posted there, only sellers can see. There are confused or irresponsible sellers who post about their gigs in the buyer request area although they are just wasting their 10 daily chances to bid. If Fiverr catches them they can lose a level or be banned.
When you go to buyer requests, ignore the silly posts by sellers. Look for the posts by buyers that want to buy in your category. Even if they already have many bids, keep trying. Although it’s small, I still get at least 2-5 sales a month by bidding.