I am using Oral Finish dental floss.

This is the Oral Finish dental floss I use.
I'm not used to using dental floss yet, so I'm not very good at it.
So, I am using a type with a handle that is easy to use.
It can be a bit uncomfortable at times, but I think it's a good starting point for dental floss beginners.
It has never broken while I used it, and it is sturdy.