Having returned to 10m air pistol, after a 35 year gap! I completely ‘get’ the dip your going through as experiencing this myself at the moment, only consolation is that we all go through it from time to time.

I’m also a ‘lefty’ and have been thinking about 10m air rifle as a break from pistol, have you looked at the Hammerli AR20? Price seems reasonably and it’s manufactured by Walther (Hammerli is Walther’s budget brand) I haven’t shot one but it is ambidextrous and has a lot of adjustments. It can also take diopter sights or a scope.