Not to get this off track but we used to use adwords and it seemed to be effective but tough to tell. I get that it's something that you really have to work properly in order to fully benefit from it. What turned me off of it was them constantly upping the cost of the keywords and I found it hard to believe that all of the sudden other companies were after these same obscure words. We were advertising real niche products with a very small market and only a few competitors across the country. Not like we are competing with local plumbers.
Agree - we need to stay on top of it but there are tools that help. I really dislike the tech oligarchs, but unfortunately they have a growing monopoly on getting a message out, like it or not. Both Google and MS have tools for analysis - can even tell how many called you if they originated from cell. You can set a budget for each set of keywords (for example to get first ranking on 'decals' , you might need $2.50, so maybe first page is good enough @1.00. ) Also, you can confine area to cities, counties, or a given radius - that is where you can really save$ and target. There are tons of companies that can help, but really, a smart business student working part time can get you set up. Worst part is when the censors took down a bunch of my keyword phrases because they had the word 'coronavirus' or Covid in them.