My Rolling Unicycle Trainer

I’m sorry about my spelling above. It’s my speak to text that needs fixing. Lol.
On a sidenote, one year ago today, I rode it in a show with a kid on my shoulders. Now I’m afraid to even get on it. But I did. I held onto things and it was easy. But I wanna ride it. I don’t wanna just sit on it. I think I can do it, but I’d rather have some safety that if I can. Thanks again for your consideration. Where are you located? If you’re in California maybe you could make me one and I could pay you to do it. Otherwise, please give me the measurements and I can have someone try to make one. Thanks so much again in advance!
If you have TikTok, look up unicycle granny. You’ll see a lot of things I’ve done. Thanks again. I’m really hoping you can help me.