Understood. I use both Mac and Windows... My four year old MAC runs consistently better than the newer windows machines. So... I was just saying one doesn't have to buy a new machine to get a good, reliable system. I have learned the hardware specs are worth looking at, but only work as well as the operating system that manages them.
I use a Macbook Pro 13" with sd card slot early 2015. I upgraded the hard drive to 1T, and have 8 gig ram. I use an external 32" Samsung Screen that cost about $100. If you look up "best places to buy a used MAC" you will find a few good sources. I am able to run Adobe on this no problem. And am running Catalina 10.15.2. Prices are going down all the time, so just find the best tech specs you can for the money you have, expect to have to buy a larger screen, and make sure you can parts before you buy. I've been very happy. I am not a pro. I used to calibrate my screen etc, but the prints I get from my Epson are close enough to what I see on my screen. This is all for about $1200.
I have come to use a combo of ACDsee for management and Photoscape for editing. ACDSee has some simple editing tools but is best for an intuitive database of photos. I have Luminar which I seldom use, tho it is quite good. I used to use ADOBE but got too pricey for me and too complex. Affinity is like Adobe and therefor too complex. But it can do a few things way better. Sumo has the all the bells and whistles for free along with the learning curve.