Hello Hussam,
Following the checklist (!) will have you select thrust limit "TO" prior to landing, in case of go-around - although this has no effect on losing speed.
If your thrust levers are at idle and you're still not losing speed, consider:
Reducing your rate of descent
Adding flap
Lowering the landing gear
Deploying the speed brake
Remember, make the airplane do what you want it to do.
Brgds