Launcher retracts perfectly fine since I gave it tension but now it can't a beyblade because it sounds like it skips teeth (I may be incorrect), when I launch it makes a strange sound that wasn't present when it was working before, and gives beyblade little to no spin.

you should probably buy a new launcher

Probably the clutch that is worn out.
On the axle where the two launcher claws bolt in, there is a clutch linking the pinion with the axle.
You should disassemble the launcher and glue said pinion to the axle.

I had exactly the same problem a year ago, my launcher is still in perfect condition since this repair.

Probably the clutch that is worn out.
On the axle where the two launcher claws bolt in, there is a clutch linking the pinion with the axle.
You should disassemble the launcher and glue said pinion to the axle.

I had exactly the same problem a year ago, my launcher is still in perfect condition since this repair.

Where can I find the clutch, pinion and axle? (Very noob at this repairing stuff).