Maybe Valheim? You could turn the settings to peaceful mode if you don’t want to deal with combat quite yet - although combat at the beginning isn’t super in-depth - but it doesn’t have a ton of buttons and the start of the game is a lot of basic “walk around and find things to interact with.”
I’m a checklist person, and the free version of ClickUp gives me what I’m after: task status, due date, priority, etc. I’ve also used Notion and Trello in the past, and they were both fine for their respective purposes (knowledge management and kanban boards, respectively).
As for email, anything that comes in gets left unread in my inbox until it’s dealt with, whether that’s a reply, an action, or whatever. Once it’s dealt with, it gets filed into a folder based on topic (Outlook search isn’t super helpful, so the topic breakdown helps).
I’ve been using Summit lately and like it so far; the dev is responsive and there are quite a few customization options.
I previously used Sync (now abandoned), Jerboa, and Connect as well. Jerboa didn’t seem quite so customizable, but it was a nice and simple UI.