I may have forgotten to mention but I've noticed that when doing a initial clean install of RetropIe 4.7 I noticed that with my 8BitDo controllers that there is a bug that does not allow me to configure the Right Trigger and Left Trigger . It does show up as a Xbox 360 controller, I had fixed that input by updating Retropie to current 4.7.11 and redoing the configuration.
Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first