Re: ” Ive spent quite a lot on google ads which lead me to this position.”
Are you referring to Paid Google Ads or Organic Search Results?
Please note that Google Ads do not affect your organic rankings, so if you’re talking about Google Ads then you might need to increase your bidding, but if you are referring to Organic Results than you need to do some research on your competitor. Check on-page content (relevancy, KW use, length, etc); site speed (and core web vitals metrics); backlinks (check competitor backlinks to see if this is why his site is beating yours); and many other things, like Schema, AMP, etc.