So I found a site with a whole bunch of musical bootlegs
http://stagedork.com/pages/watch.php?id=59&vidid=144#
That will bring you to a Dear Evan Hansen bootleg.
Just a warning, if you are on mobile, over top of the video, is an add that is most likely invisible, but you will see an X, click the X, it will close the add, then you are safe to watch :)
If you do happen to accidentally click the add, close it as soon as possible. It’s spam and might bring ‘bad’ stuff.
But other than that, the site is safe ;)
Have fun!