Your dominant beliefs will prevail, if you believe that thoughts can't manifest without effort, then guess what??.........that's exactly what you'll get.
I've made stuff happen with just thought and nothing else, but usually the big things need a little more than just a thought. Of course I believe that, so it's true.
Whatever you believe to be true, ultimately will be.
You also say.....
I don't want to learn how to manifest things to get rich easy and fast,
Why wouldn't you want to get rich as fast and as easy as possible?? Do you hate money?? Do you love working hard and long for very little financial reward??
Money can make life better, money can save a life, money can bring so much joy, the more you have the better your life and the lives of others can be.
HTH
Jeff