I'm a Fiora player for 1 year. I'm near to be 7'th degree at mastery of Fiora.
Playing with Fiora is really enjoyable because she is can be so POWERFUL or so WEAK it's depending to the player. I mained Fiora for 1 year. Playing with she is a real experience.

Check my matches with Fiora.

My matches which is saved on kassad.in

(My new accounts' name is Fiora TheDuelist) Add me to play with me.

Pros

Very good in lane.

High move capasity.

Really

POWERFUL if mastered.

High damage and high HP.

Counters everyone with true full build.

Cons

Real fail if you don't know how to play.

If you don't know the true build it may cause problems.

Need to know how to use Risposte.

Fiora is the best champion if you can master on her. She can easily counter everyone with true build and true Risposte using. I'll add more things later.

You're Fiora. It means you're Offtank. So take damage, deal damage, kill and assist. It's hard to kill you because you can easily escape with your Q (Lunge) and dodge stuns with your W (Risposte). Also you can heal yourself with killing someone with your ultimate (Grand Challenge) or hitting to 4 different parts of your ultimate (Grand Challenge).

Q -> AA -> E1 -> E2 = Deadly combo at level 2.
AA -> Q -> AA -> E1 -> E2 -> Hydra = Your main 5 hit combo.
Q -> E1 -> E2 -> Hydra = 3 hit combo.

I'll add more.

(AA = Auto Attack = Normal Attack)

I have 3 accounts. One is 30 lvl but don't have Fiora. The others have Fiora but I'm not 30 at them so I can't play ranked game for a short time with Fiora.

My matched which is saved on Kassad.in

If you liked please don't forget to like :D