Some sections moved. Most all of the things you look for are now huddled under “you” so you have to hunt around and get used to the changed locations.
The oddest placement? Groups are now found in the 3×3 dot icon with sundry other sections and functions. Odd.
Remember, you can still consult the Help Center for how to find and best use functions that have moved elsewhere. Help Center is also found in “me. “