In general I find macOS very stable. Though I do not use any of the same apps you do aside from Sublime Text and qBittorrent

On qBittorrent specifically the application can often "feel" like it is hanging because it brings up modal windows behind the main window, meaning you need to drag the main window away to interact with the modal and the main window will be unresponsive in that time. This may make it feel like it is hanging, when really it's just down to a non-native macOS application not using the correct APIs to display modal sheets

I do occasionally get other application crashes, maybe a couple per month, usually it's down to the application doing something it shouldn't. My current macOS uptime is 28 days, which is when I last installed an update that required a restart