[1.19.2] I need to change the speed of the player in the effect

[Pherment]

Here is my code

public class StainedPantsEffect extends MobEffect {
    public StainedPantsEffect(MobEffectCategory mobEffectCategory, int color) {
        super(mobEffectCategory, color);
    }

    @Override
    public void applyEffectTick(LivingEntity livingEntity, int amplifier) {
        if (!livingEntity.level.isClientSide()) {
            livingEntity.setSpeed(0.05f);
            System.out.println(livingEntity.getSpeed());
        }
        super.applyEffectTick(livingEntity, amplifier);
    }

    @Override
    public boolean isDurationEffectTick(int duraation, int amplifier) {
        return true;
    }
}

I want that when the player had this effect, then his speed decreased.
The line getSpeed shows that the player's speed is 0.1, but the line setSpeed(0.05f) does not work and the speed does not change. How can I change the player's speed?

Edited August 17, 2022 by Pherment