I love Krita!! I put my specialty software into a virtual machine, aka the shame box. You can disable networking for it. 😈

I've been a LONG time user of Adobe, grew up with PhotoDeluxe and pre-suite Photoshop and used every version of Cretive Suite since my parents ran a graphic design business. I made all my high school essays in InDesign CS4. Suffice to say, growing bitter over proprietary software in the last few years has been painful but I'm doing my best to move to only FOSS.

There was a point in time I tried replacing Premiere with DaVinci Resolve, but I quickly noticed it was oriented for color correction, and some of its features for composition were locked behind Fusion. These days, if you can believe it, I do all my video editing in Blender. It's still got a long way to go, but since v4 the VSE has gotten really good. I'd like to try kdenlive when I finish migrating to Linux, but on Windows it basically doesn't support GPU encoding which is a dealbreaker for me.

Adobe Fresco is replaced quite well by Krita. It has a learning curve but is far more powerful as a result. I'm still learning but I'm impressed.

I don't really like Scribus, but I don't really have a need for software like InDesign, so I haven't had to worry about it.

I've used Inkscape way back just because it was portable when Illustrator wasn't. It was pretty minimal back then but I can see it's grown greatly in depth. The workflow is enough to be disruptive, but not too badly to work through I think.

And finally the titan, Photoshop. It's such a massive and ubiquitous software that it simply cannot be replaced by any single program. At least since I moved to drawing in Fresco I don't use PS for that, but again Krita is a fine replacement. Pixel art in PS is very normal too, but that's replaced quite nicely by Aseprite, it's more capable in that space and still quite easy to use if you don't know its features. It's the photo editing and general purpose image editing that's the real challenge. I keep hoping that version 3 of GIMP will magically fix its problems, but in the meantime it's frustratingly clear that it's built by software engineers, not artists, but it's often made out that it's everybody else's burden to forget everything they know and start from scratch to learn its special workflow. There's an interesting patch someone made called PhotoGIMP that's supposed to improve that, but I haven't spent enough time with it to really say. Currently my only alternative is Photopea. It works great right now, but I don't like that it's a web app and not FOSS. I really hope I can eventually find an alternative that I can finally be comfortable with.

For me I would start with affinity while not in linux but it's OK on wine can be a bit buggy tho but you need to compile a custom version of wine and no hardware acceleration support and it's possible they are gonna release a linux build as well.