A nice thing about being left handed is there a few things I can't get precious about. Fountain pens are never going to feature in my life as I'll just smudge everything. Similarly, I'll never end up collecting gaming mice as most of them are not usable for lefties.

Learn to write backwards. That talent is far more accessible to lefties, for whom artistic expression and fine motor skills are both on the same side of the brain.

Or write in one of the Semitic or Western Asian languages, which are right-to-left. You’ll never smudge and you’ll be able to enjoy fountain pens.

You could try getting an EF nib and pair it with a fast drying ink ( https://mountainofink.com/blog/fast-dry-inks for examples)? Also, some manufacturers (for example Lamy) make special nibs for left-handed people.