Fulfilled by Admin and admin store

Hello, I fulfill products on my own and have vendors that sell too. I want to be able to differentiate products I sell from products my vendors sell just like Amazon’s fulfilled by fba. If not can I as admin have a store in my frontend where users can view only products fulfilled by me.

Moreover, I need to give out coupons but I want it to apply only to products I fulfill and ship as an admin but can’t do that now since admins have no shops.

In summary, i want to make clear and separate products we fulfill and ship from vendors products and make coupons we create apply to only our products.