Looking for help with establishing a “Weekly Fantasy League” using a DK or FDS as platform with weekly and annual payout/standings

I love the concept of fantasy football but would love to build around weekly lineups instead of the traditional fantasy style.

I am hoping to create a league that has weekly incentives along with annual standings/incentives and just using free lineup options on a DK or FDS with payment structure off the platform.

Has anyone done anything like this? Or have any ideas for ways they would go about it or add to it?

Maybe you can already do it somewhere and I’ve missed it but love the concept.

Thanks!