What do you do when an object is on top of another object and you cannot move it, edit it, or anything, without moving the other object?

For example, you have a table, and you have written some text onto it. Then you can neither move the text or the table independently. What do you do?

This has worked for me many times. Use Find, and type some letter into the search bar. For example, an "a" or any letter that might be related to the object you want to grab/select. Continue clicking Find and trying with some other letters. Once the object has been found, it will appear blue/selected, and now you can move it.