Is Flutter a great alternative to Java/Kotlin?

I’ve been interested in learning Flutter but I’m still a bit unsure if I should so I’m here just to get some advice, lol.

  1. Is it easy to use and learn?
  2. What type of apps can you build with it?
  3. Is it similar to any other programming languages? (hopefully, Delphi, lol)?
    Thx in advance for the advice!