Do you need to check what you wrote in Teams? Where to find your last messages? You can use My Activity or search for your own messages and filter results. #TeamsTuesday
My Activity is found in activity feed. You can switch between Feed or My Activity. My Activity shows your replies and posts in team channels.
Alternatively: search for your own first name. Then open filters and limit the search
From: your account
Time range: today, yesterday, this week or last week are most likely most suitable.
Limit search also to some Teams or Channels if you know where you might have written that message.
Search will also work on private chats.
Best Practice is to use Save message functionality to bookmark those messages you want to get back later easily. You can save your own messages as well as others.