corroded battery terminals, clean them, and try jumper cables.
both way use same crappy terms.
what transmission A/T or M/T my guess, A/T
so wiggle the gear shift, try neutral starts. this is the PRNDL switch
wiggling it finds new fresh brass on the switch contacts,
wiggle as you crank the key.
if that fails
then hot wire the starter solenoid.
if that act causes cranking, then the starter and battery and cables are good. and means the KEY LINE is bad.
if no crank , hot wired, then that means the starter bad. (battery good , battery charged in all cases)
see hot wiring here.
in a nut shell
1: battery charged at 12.6vdc. rested.
2: chock wheels, all brakes set., in PARK (or M/T in neutral.)
3: gain access to the starter
4: unplug the key line (that is the tiny wire) on starter solenoid.
5: keys in pocket
6: jumper the solenoid tiny wire, to the big outboard lug on solenoid.
it wont start, keys are in pocket.
the starter is good, i save you 1/2 the diagnosis. in 1 simple step
put the wire back removed in #4
if its dead, the KEY line is dead. ask how to fix that. next. i f so be...