Seconding that Zen has been an amazing Arc replacement for those happy with Firefox based browser.
The only challenge is daily driving both Zen and Zed as a code editor is a pain when it comes to macOS spotlight (/raycast).
might not meet your needs but I had similar issues and found an app called rcmd, it lets me easily bind keybinds to my commonly used apps, and you can also easily toggle between multiple windows of the same app via the keyboard
https://lowtechguys.com/rcmd/ - no affiliation, and probably other similar options are available