Are you trying to lose fat?
If so, upping your cardio and ensuring you are in a calorie deficit will help.
While doing weights can be helpful to improve your physique, there’s no point in building muscle if it’s covered by a layer of fat.
As previously mentioned, muscle weighs more than fat- you might be gaining muscle.
Are you eating more? Has your body fat % reduced?
Either way, good luck and keep going!