Automatically renaming and moving files from a single folder to many folders

Heyo.  I'm a new Bridge user and a pic junkie hoping to make some rapid progress organizing my vast collection.

It's going to be slower going on my phone pics, but I think I can make some rapid progress on pics from friends and family from FB, which have file names incorporating their user names (looking something like AName_A134103314etc . . .).  I would like to group these pics by the person that took the pic and subdivide each person's picks by *approximate* year (doesn't need to be perfect).  Further, I want to change the file name to sequential numbers within each year.

So here's what I'm doing so far.  I've gathered all my pics into one folder: ALLPICS.  Then I sort in Explorer to arrange by alpha filename.  Then in Bridge, I open ALLPICS.  I scroll to the files with the usernames.  Highlight AName_A's pics for a given year (say 2016).  Right click>Batch Rename>Move to other folder (ALLPICS/ANameA/2016);  New filename, sequence number, 01, two digits>Rename.  Then I repeat for the 2017 pics, then 2018.  Then I move on to AName_B's pics.  Etc.

While all this clicking in Bridge has been quicker than doing everything in Explorer, it seems like I should be able to accomplish the desired end faster than I currently know how to do.  Would any of you have some good suggestions?  Even if it's "read X and Y" or "look at tutorial Z on youtube", that's fine.  If subdividing by year will greatly slow down a solution, I could just forget about that in Bridge and divide them up in Explorer later.  If what I really need is to write some sort of script, where in the world do I start?

Thank you for your time, folks.