How can I get first clients for my startup?

Hey everyone,

I’ve launched a graphic design startup recently. This is my first post asking experienced founders and devs. for some advice regarding it.

The service is called GetFast (https://getfast.com/). Actually we launched a few months ago, but starting to receive revenue from it takes too long. Does anyone have any suggestions on how to get first clients (approaches, relationship-building tactics, marketing activities, etc.)? Perhaps, someone has a similar experience. What worked best for your company at the beginning?

Also, we are constantly adding some features like Free Trial opportunity, UX/UI-related changes, portfolio expansion, but this doesn’t work. What do you guys think about my service? Is there anything our website lacks?

I'd appreciate all the help I can get.