You probably have a starter with an attached solenoid to engage
the gear, and the mechanism is stiff.
Warning - the starter is straight off the battery so disconnect
that first.
Removing the starter is straightforward. Dismantling and
re-lubricating somewhat more difficult but not impossible.
With some versions you may need a heavy duty soldering
iron to undo the solenoid wires.
The solenoid has two windings, main and helper, so keep
careful notes how it all comes apart.
While it's apart it's worth lubricating the main rotor bearings,
and a pain in the butt to get the carbon brushes back in place
on the commutator, clean this with fine wet and dry.
Make sure same brushes same way round, they wear
to the comm.
For a 95 starter rusted bolts and starter clevis pin are
a possible problem when dismantling.
Of course you can pay an arm and a leg for a new
starter, get an exchange one, find a local auto
electrician who does bearings, alternator repairs,
commutator turning etc (a rare breed nowdays),
or try a breakers yard.
It might be worthwhile checking the ring gear before
you get too deep, if that is knackered you have more
than just a starter problem. Check it all the way around,
as it stops in set positions (due to compression), and
thus wears where it stops and disengages/engages.
You can see the ring gear once you have the starter
off, and there should be a timing/inspection plate on the
clutch housing.