Can I suggest joining "the Toastmasters" https://www.toastmasters.org/ . I found it very educational. I learned that was rushing to fill the "dead air" before I had fully formed my thought (read:sentence).
All my "um"s and "er"s disappeared. You will be fine.
Grub was legacy since gummiboot. Please let's let it die.
Insert
inst.sdboot
as an option in the Fedora installer to rid yourself from grub on Fedora. Websearch for further instructions/how-to.