My car tries to turn over, but it won't

My Car is a 1992 Mercury Topaz GS 4cylnder.

Will I turn on the car, but it tries but nothing, i have gas in it. but nothing. please help

When you say that “it tries”, I assume that you mean that the starter is turning the engine in its normal fashion, but the engine does not start or run under its own power. Unfortunately, the cause could be a fuel problem or an ignition problem, and from this distance, we can’t tell which it is.

When was the last time that the spark plugs were changed? How about the fuel filter? Is the fuel pump the original one? Just there, we have three possibilities, and the list continues from there.

If you are not mechanically inclined, I don’t think that you have any alternative but to have a qualified mechanic diagnose the problem.