92 honda civic marks at fuel tank then I drive it marks at empty what could be the problem?

92 honda civic marks at fuel tank then I drive it marks at empty what could be the problem?

Probably The Sending Unit.

When you drive you burn gas and the needle goes down, if it goes down just because you rev the engine then the voltage stabilizer has failed

The "sender" for the gauge is in the fuel tank.
They wear out and get like that. It's expensive to empty and remove the gas tank to fix it.
Fill up every 200 miles.