You will not outspend the statewide advertisers, so buy a narrower slice of the Front Range
A small account visible for a tight keyword set every day beats a broad account that runs dry mid-month.
The generic metro terms are the most contested inventory in the auction and the least specific about intent. Bidding there puts your budget against firms with three times the spend and no reason to stop.
Narrow on two axes. Matter type, so you are buying the work you want rather than everything with the word divorce in it. Geography, so a practice that files mostly in Jefferson and Douglas owns those searches instead of paying to appear in Adams County where it never files.
Narrower keywords usually cost less per click and convert better, because the ad can say exactly what the searcher asked about. A person typing a parenting time modification query is not served by an ad about family law representation.
Set the budget so the tight set runs all month. Being present every day for twenty terms is worth more than being present for two hundred until the middle of the month.