Is it normal that the team I’m in a work has lost 3 people in a month back in may now 4 of us are looking to leave for other areas as well?

Essentially 7 out of 13 in the last 3/4 months.

Is it normal that the team I’m in a work has lost 3 people in a month back in may now 4 of us are looking to leave for other areas as well?
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