Hi Saniya,
My youngest daughter started grinding her teeth as a teenager. It was loud enough that I could hear the grinding from my bedroom that was across the hall from her’s. I took her to see her dentist and he recommended a custom fit mouth guard. By custom fit I mean they took impressions of her mouth and then the mouth guard was made to fit perfectly over her teeth. She did not have any issues with it because it was a perfect replica of her teeth and it was thin, not big and bulky like you think of when you think of the type used for sports.
It was also very easy to clean, she used regular toothpaste to clean it. During the day she had a special case that she kept it in.
I hope this was helpful
Noki4