I just switched from Linux to mac and not being able to close windows from mission control is super frustrating. Speaking of frustrating things on macOS - can someone tell me the reason why seemingly every single tiny utility app costs money? Just does not feel right to pay for features that ought to be system functionality.
Here you can find many FOSS utilities:
https://github.com/serhii-londar/open-source-mac-os-apps
Also, check r/apphookup on reddit for discounts (every day there’s a couple iOS apps that are made free and they’re often compatible with the Mac too thanks to Catalyst). If you have an iPhone you can use the Pager app and set monitors for the subreddit to receive notifications.
Eventually you can pay for a SetApp subscription (10 whatever your value is + 3 for any additional device).