Inquiry About Hardness in Gear and Radio

Hello friends, I have just joined you, I have a 2011 model manual Bipper Tepee vehicle. My arm hurts a lot while increasing and decreasing the gear too hard, I will be glad if it gives information about where to look if it has happened to you before. I want to make aux, I would appreciate if you show me the way.https: //hizliresim.com/25os9ihttps: //hizliresim.com/5m2J0x

Is there a grunting noise in the gearbox in case of shifting, any gear shaking or cutting gas?

No there is only hardness