Instead of just trying to make your own services with 0 vouches 12 posts and 3 day joindate, try joining a larger service to build a reputation within the service community. It'll require you to put a deposit down, but no big service provider is gona run off with your deposit lmao. It'll show ur serious about wanting to do things in exchange for money and if you work out a contract with the provider, will allow you to gain some vouches.
If you're not interested in that, just post threads offering stuff for free. Do anything someone asks you for and dont be a retard when msging them. Half the vouches ur gona end up getting aren't gona be bc u did a job fast or did a lot for a little, the vouches are gona come from how happy the dude buying the service is once its done. If you leave them in the wind but get the job done, odds are they won't vouch or come back to you for anything in the future lol.
As for gold trading, start selling gold. everytime you sell gold, you can ask person you sell to to provide you a vouch. then with the money you make from selling the gold, buy the gold and again ask for a vouch. repeat this process 20 times and you have 20 vouches and some semi-legitness to your name. Try to focus on name recognition as well. Try to make yourself known in each community you want to build trust in.
Gl