Clutch on 2007 scion tc

I had my clutch get stuck to floor found out was
master clutch cylinder and slave cylinder was still
able to shift and drive.. We replaced both bled
system for weeks with no clutch coming back we
also replaced clutch release bearing after taking
new master clutch cylinder back and got another it
bled fine and got clutch but now while car cranked
wont go into gear realized he put clutch release
bearing in backward so he said if he has drop
transmission again we are replacing clutch for
safety now while taking everything out again he
calls me and says who ever out clutch in before me
never put throw out bearing back in not there.  Is
that possible? Drive 2 months with out throw out
bearing in and why shift fine before and wasnt
even issue for the reason why car messed up and
didnt really even needd clutch just did it cause had
to drop transmission the clutch was actually
replaced three month prior so it shifted fine and
disengaged clutch before master clutch cylinder
and clutch release bearing in and now wont go into
gear