Aftermarket gears?

I'm told I have a "crappy" clutch but it hits like I'm getting hit by a freight train. I only destroyed 3rd gear because I had 2 passengers in the car that weren't exactly small. I'm going to leave the clutch and PP as is and build up the tranny (hence why I asked if they make stronger gears) but still waiting for answers on that.

It’s also the smallest gear on the shaft.

You have to apply the clutch. With a clutch like you have you don’t apply the clutch. It’s like a toggle switch.

It’s either on or off. That breaks parts.