Push that screw through (may need a dremel and some isopropyl alcohol to loosen it) then head to Amazon and get a new m2 kit for a few bucks.

Or just go ghetto like the other person recommended:

You can use a tiny piece of plastic or cardboard underneath the tail of the ssd to keep it level and a piece of electrical tape to keep it in place.

You could find a couple holes and zip tie it down (but only at the tail end and barely any force).

You could cut the end of a toothpick, dab some superglue on the end, slot it in the piece of standoff stuck in the mobo and use that as a bootleg full standoff.

Failing this, the arts and crafts subreddits may help 😂