That's exactly where I am. I used Adobe's software from version 4, through the CS suites, and on into the full CC subscription option while I had an in-home business. After shutting that down the end of 2021, my main goal was to eliminate all subscription software.
While I used the free Inkscape for a while, it's just too clunky and outdated. I finally went with Affinity Designer 2 to replace Illustrator. Very much worth the perpetual license cost.
Picked up the free version of VivaDesigner to replace InDesign as it's the only third party app that can import InDesign files, and export an InDesign Markup (.idml) file other InDesign users can open. But since I never did much with page layout in my business over 45 years (other than opening up client files for reference), it just sits on my computer taking up space.
Master PDF Editor replaced Acrobat Pro as it's one of only two perpetual license alternatives out there. Other titles mentioned in this topic do work very well, but they're subscription only, and that's on my do not ever buy list.
My only holdout is I continue to pay $10 a month for Photoshop CC. I know it too well to give it up for anything else. And while Affinity Photo is a nice app, it can't run third party filters I use with Photoshop all the time.
Is Master PDF Editor a bit clunky? Yes, but overall, it works well. You get one year of updates from the time of purchase. After that, you either pay for another year's worth at a reduced rate, or just continue using what you have. I haven't updated MPE for at least a couple of years now. And as long as it keeps working in whatever is the current version of macOS, there's no reason to upgrade until I have to.
I liked PDF Expert better when I tried the trial version. But $145 for a one-time cost version that doesn't get you even one bug fix, minor point update? Hmm, pretty darn stingy.