My car starts in summer but don't want to start in the cold

Okay so I have a question I have a 2004 Chevy
Cavalier 205,459 miles on it, during the summer
time it will start but once it hits the cold winter air
then it seems not want to start but it cranks over
okay and everything else is fine we had a new
battery change we get oil changes very regularly
and it has high mileage we put a new water pump
just recently the expensive spark plugs things but
we just don't understand what could possibly be
making this car not wanting to start even thou the
lights and everything comes on. We did get it
checked by five different mechanics and it seem
like nobody could figure out what the issue was we
even had it set at a shop for almost a week and
apparently the car started fine with them but we
got the car home the next following day it's that
overnight and it didn't want to start again so I have
no idea what this car needs to be fixed on and I
don't know if it's a crankshaft or something inside
the motor and especially if we get new spark plugs
if it could be crankshaft or exactly what could it be
but so far it's doing its thing where it runs in the
morning but once it's cold out and it's dark it don't
want to start and it takes a few minutes to start up