>>527542429
There's way too much Fate to recommend an order to consume it in, so the best thing to do is watch each anime in the order it came out, then read the VNs and play the games. You can play the gacha or read its chapters on Youtube at any point since it stands alone, but you might have better interest in sticking with it if you've watched the other stuff. There's a lot of gacha and content can get locked behind difficulty, so be wary of the amount of time it may take to build up your account.
The only option I would consider is reading the FSN vn before watching the Ufotable and Deen anime and movies. Up to you.