While I understand that you’ve gotta make a living, ads are far more palatable if the user can consent to them.
And the way to make the user a part of the process is to offer a trade for the ad, rather than obtrusively running them.
“Would you like 500 gold to watch an ad?”
Yes? Ad for in-game currency that provides powerups? That’s a great deal and it’s win/win.
No? Okay, no ad, but no power up.
Statistically, you almost always get a yes, but the players are 100x happier than the slimey games that force ads in unscrupulous ways.