Question about Rebate Matchups/Stacking

Hey all! I am fairly new to actually doing deals but I've learned about couponing since way back when TLC had the show on it. I've learned now it's all about the rebate apps. I've done some free and super cheap hauls but I'm curious if there is a place we can look up rebate matchups? I've mostly been following YouTubers and using the deals they find. When I look on my own, it seems to take forever to find an item that has rebates in multiple apps. Someone should have a website that matches these up automatically somehow so we can just look at the deals. Is there a resource like this somewhere???