Comment by CSSer

You might try Magnet. It's $10 on the mac app store. I've had zero issues with it, and it has some problems sorted that other tools don't or haven't always, namely correctly tiling across monitors. I used to use Rectangle, which is open source and frankly pretty good but at the time I was using it had some warts. macOS' window management seems to not be entirely transparent. I don't know all the details, but this is my workstation. I need(ed) this to work now, and if it's a system that might change a bit over time or has some weird idiosyncrasies then I'm happily willing to pay a low one-time fee for a tool like this.