So because your brain goes through processes before you decide, you aren’t really deciding? Sound like really faulty logic to me. Cognitive psychology is a fascinating topic that has a lot of relevance for things like Bible interpretation and doctrines of inspiration (i.e. the construct of inerrancy), but I’ve never heard it linked to free will like this. You probably aren’t going to get a good intro from YouTube influencers. Again, I would encourage you to read books or articles from actual experts if you want to explore ideas or fields of inquiry.
There have been some interesting discussions about the topics of evoutionary psychology and free will (not necessarily connected) in the past here, I’ll try to dig up some threads for you. If you ever want to continue a discussion on a closed thread, message @ moderators and we’ll open it for you. Or you can start a new thread quoting the part you want to discuss and it will automatically link for you.