Lightroom’s pretty much the mainstay, and despite using Photoshop somewhat professionally outside of photography, it’s what I use 99% of the time for general editing.
Photoshop is much more powerful of course and gives total control, but is more geared up for extensive work on single images.
I’ve not used it but Luminar software seems quite popular as uses AI algorithms to enhance - looks quite good actually. Capture One is another.
Personally I think you get what you pay for and free alternatives aren’t brilliant. Depends on what you want to do to your pics of course - a quick crop and simple colour adjustment you can do in anything (Instagram included)
I also went from semi-pro Nikon my whole life to a Fuji x100 and pretty much use the Fuji for travel now.
It’s never about the camera really - that’s something I’ve learned more and more as I’ve got older and followed various photographers who just seem to capture beautiful images. It’s practice and experimentation and an eye for a nice final image. I take hundreds (sometimes thousands) on trips and have a handful of great pictures at best.
Great that you’ll get some extra life out of the Nikon. Great cameras. And saves the environment.
