2006 Hyundai Sonata

Car has been sitting while 8 mos
(outside), was started a few times & it
started fine ,  but not in last 4 months.
:( now Won’t unlock with fob or
manually. Key will turn but nothing.
Prior to this Drivers side door wouldn’t
open with Latch or otherwise, inside
door lock button wouldn’t work either
but I could use key in drivers door and
unlock doors just got in from
passenger side climbed over. But now
manual key turns but not unlocking
doors. And key fob that only worked
off and on not working at all either. (I
Changed batteries in fobs too but still
nothing) I fear the car battery from
sitting so long without starting has
probably gone dead. Trunk - I can
insert key but won’t turn. So can’t
open hood or trunk any other way but
by inside floor levers.  Only key hole is
drivers side.  With drivers side inside
door lock button not working /
jammed  wouldn’t work to have
someone  try to reach it from outside.
Any ideas? People was in the process
of donating it to won’t take unless can
get in it.