Im really sceard that my mario kart speedrun is too long and I might get in a bad place and I dont feel like submitting it I need help chooseing if its right or wrong

Okay

I found a glitch in Mario 64 but I dont know if it can be used for speedruning

I dont know how to play switch games on my pc so I can submit them

Just wanted to know so if somebody got any% record on Mario sunshine 3d all star's will that go on the GameCube and the Wii leaderboard as well?

I been practicing for a week on Mario 64 pc port speedrun 70star run but I don't know if a week is good enough any advice?