Using a wet tissue when making istinjaa

Q:

1. I want to know if wiping with a dry tissue then wiping with a wet tissue during istinjaa is okay before making wudu and praying because I read that using a wet tissue spreads the najasat. What if I wipe with a dry tissue first?

2. I notice sometimes that the water from the toilet seat splashes back after I flush but I am not certain if it came to me or not, so is this water najis?

Intention for salaah

Q: Is the salaah valid if a person makes the intention before salaah in non-arabic, and instead of using the word “Fajr”, he says “morning prayer” or instead of using the word “Maghrib”, he says “evening prayer”?