I am not answering this because I in any way consider myself great
But I was in your shoes once and worked very hard - and rarely saw a " good" buck.
For me and the woods I hunt - it was all about location, location and location.
I now hunt the same woods but setup differently - and usually get a couple chances at mature bucks every year.
My advise would be to really look into how you setup and how close you are to areas a mature buck would feel safe in during light. For me the beds are key - you don' t need to be in them - but you really need to know exactly where they are and set up as close as you can. leave the pretty woods alone - abandon the types of areas you hunt now and change your overall game plan.
Mature bucks are IMO a complete different animal than young bucks and doe - and you need to hun them differently. Cover is key, funnels with heavy Cover are key, and this time of year add some doe to that mix and it can be golden
Good Luck