I've known a few people with 7D2s who have been unable to get on with them, preferring to use 5D4....s
My other half is one, the 7D2 went in to MPB and she got an R6 from Cambrian (which also replaced her Fuji kit)......
The Canon *0D series (10-20....90) reached a peak at 50D as the series was just below the 1D and 5D series in Canon's hierarchy. MC loved her 50D and 5D2, then the 7D came out, which marked the decontenting of the *0D series. Launch of the 7D2 coincided I think with the 80D which marked an upturn in the series, and the 90D was supposed to be a replacement for both 80D and 7D2... (it's like the D7500 replaced the D7200 and D500)...
Anyway Phil is right, if you are invested in EF lenses stick with Canon... The 50D is a great camera but you do not tell us what lenses you have - if you have L then great, if not I would upgrade the lenses. Only then would I upgrade the camera body....