If you are not making money already on your work, I would not buy a professional program, like Adobe. It is way too expensive, and there are too many other options. Top of the line free program is Resolve. My old computer could not run it, so I found an under $100 program. My new computer can run Resolve, but I already have the other one I bought. No worries, PowerDirector does more than I will ever need.
I have an old copy of Adobe CS3 Premium, it was free and I like it (photoshop, dreamweaver, acrobat pro, flash...). It is also an antique, but still works. Will I ever upgrade it? No. Have you seen their insane pricing structure?
For graphics, like photos, thumbnails & banners I like Affinity. It is about $50 and is just as good as Photoshop. The only learning curve was just figuring out how it was different from what I was used to. The programs are not any harder, just the options and tools are not in the same place.