Tim,
I don't have experience with your niche, so I just googled ...
'What should a loved one be dressed like for a funeral'. About 371,000,000 results for this search .
"Planning a burial" About 80,600,000 results for this search
"Should I Buy a Cemetery Plot in Advance" About 9,280,000 results for this search
Looking at some of the sites. Some have ads ...
https://funeralcompanion.com/ has ads
https://funeralcircle.com/ has ads
and several other.
Did you connect the site to Google Search console? That would be my first step, to start to see how many people are searching on your keywords. You can also take a look at your keywords in Google Trends, but it's less helpful the Google Search console.
I'm no expert, but funeral services are a respectable business. No reason adsence should not take them. Build you web traffic and I bet you get in.
Be sure to cover these topics (where relevant) because they likely have the most traffic.
< funeral.png >