Firstly, share your seller profile link to your profile so everyone can see what is the problem in your gigs.
Secondly, you can't get buyer request personally, there's an option to send buyer request in a specific time. You have to figure out when is the time.
When you'll get message from buyers, make sure to respond it as soon as possible.
And like everyone says, make sure to be active, republish your gig with more corrections if you're not getting order for a month or more, give buyer request everyday, complete your profile in every corner.
Hope you'll get your order soon.