A question about how I can do it

First of all, there may be minor bugs because I wrote this article from Translation. I have a samurai sword mod of my own. But in my mod I want a sword holder that will be next to my right leg where I can hold my sword. What should I do about it? And how can I do I'm a little novice
and i just started modding sword armor mob making etc. I learned but I had a hard time in this regard, there will be only one slot in the logic and I will put my sword in this slot and it will give a small armor that I will use instead of trousers. And it can appear from the outside.