Targeted ads

If an app pays the fee to Apple, it gets in the App Store. Pay a higher fee and the app gets pushed. Even the scum apps are welcomed if the pay the fee.

You can try this.. Settings > App Store > at the bottom Personalized Recommendations > Clear app usage data. It may help.. it may not, but might be worth a try. Maybe after u clear it, do a couple searches for the type of apps you’d rather see

Sometimes it advertises apps that are based on popularity in your area.

Is your partner linked to you as a family member? (Family sharing etc)

Maybe it’s suggesting apps downloaded by them?