Nissan Altima: 93 Altima wont even turn over

I have a 93 Altima that seems to have power, headlights come on and dont
even flicker when the key is turned, but nothing happens.
this car has a manual trans and we were able to push it to get it started.
the car started a couple of times after the first incident but the problem
has happened again.

Any Ideas?

Thanks in advance

I have the same problem in my 93 Nissan. Can you provide me detail
information and cost what should I do to solve that. Because I am wasting
money in towing and to serviceman as they are not figure out problem.

Can I use used auto parts to solve this problem?

I do not know so much about mechanical terms so please explain me in
simple english.

Any advice will be appreiciated.

Thank you,