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its look like you site not mobile optimized as google wants. After google Launched that mobile 1st indexed,,regular WordPress sites not use AMp and no upgrade their them according to Googles page index requirements you have to put much weight into those factors,, and again just like my other biddies said their some on page seos and tag issues too so make sure you get fix them
If the Market place provide user profile and paid sponsor add best way to target is using tags keywords and long description of what you offer... and that way, when the marketplace do paid ads your service will choose by them to promote so you get free promotions..
but for that you have to build your service reputation and good rating to show up. hope that give you a idea.