Since you've got Photoshop muscle memory but you're no longer a heavy user, have you considered Photopea[1]? It's very similar to PS in terms of UI, and even has the same keyboard shortcuts, so you'll feel right at home. At least more "at home" compared to Pixelmator, IMO.
I'm still amazed about the quality and responsiveness of this web tool compared to the real Photoshop.
Just starting Photoshop CC is longer than opening Photopea + a quick edit + export.
[1] https://www.photopea.com/