I have to agree with others, pin point the exact reason the D7200 isn’t doing what you need it to do, then you can make an informed choice based on that.
I’ve personally just changed from a d5200 to a d500 but I went through that same thoughts as you a few years back, the good folk here pinned me down to the same question and my answers were not to convincing and I realised the d5200 was actually fine for my needs, I got heavily into sports and then the lack of af points and slow af really made me struggle, so I searched and chose the body that would remove that issue.
So, so glad I waited, I feel this body just fits everything I do and want and I’ve got into wildlife as well, mainly due to this body and the fact the crop sensor means I don’t need really expensive glass to get the reach.