You might already know you can use Alt+Tab on your keyboard to switch between your open programs:
but if you press Win+Tab, Windows will display all the programs you have open and you can click on the one you want to switch to:
And if you have multiple displays (e.g. two monitors, or your laptop connected to another monitor), it will group the programs together so you can see what’s where.
An extra little tip… if you’ve got so many programs open you can’t remember what’s running, it might be worth closing a few of them!