If you have a small amount of games on steam why don’t you just delete steam and reinstall it in the D drive. There should be some extra memory in their.
I did this because my computer has 320gb of space but my C drive only has 70 while the rest is on the D drive. I’m pretty sure just moving steam or possible other games to your D drive would help instead of just deleting other games.
Oh and if you have downloaded alot stuff go to my computer and on the left click on downloads and delete all the downloads that you don’t need or are unimportant. And make sure to permanently delete your junk in the Trash folder. Just open up the trash bin and click on empty trash bin and if you had a bunch of stuff in there you will get rid of it all.
Before I knew about all this on my old laptop I was able to free about 16gb of space.
And on your question to moving steam to the D drive without reinstalling… yes you can. Just move the steam folder to the D drive then delete all your shortcuts on your desktop or in other folders and just make a new one. Or just change the directory in the file’s properties.
HOWEVER, I don’t know if this works cause i’ve never actually tried it myself. BUT I think it will work.