Possible reasons:

The dip tube is clogged or improperly positioned.

The nozzle is blocked.

The pump mechanism is damaged or not primed.

How do you adjust the spray pattern?

Most trigger sprayers have an adjustable nozzle that can be twisted to change between mist, stream, or off positions.

How do you unclog a trigger sprayer?

Remove the nozzle and soak it in warm soapy water.

Use a pin to clear blockages.

Flush the sprayer with clean water.