It seems that you are a talented young man of literature and art. This is what I think about your question. Flute is certainly easier than violin, but it will take you at least 2-3 years to learn to enter a band through these two instruments. Even if the flute is easy, I'm afraid it won't work in less than two years. Otherwise, what's the point of hanging out with others As for that instrument, it's easier to join the band. Objectively speaking, the violin is easier. But judging from your situation, besides your own level, it depends on what part of the band is missing. Generally, the last graduates leave a few and add a few, and no one can guarantee which instrument will be easy to enter the band. It is better to try your luck by restoring the original piano or bass, or it will be cold to start learning violin and day lily again.