I would recommend that when someone is new in a large project with an older code base, to pay attention and learn from others.
A mistake I often see is too many “suggestions for improvement” too early. This behavior, when excessive as it often is, is perceived to be invalidating tough choices that were made before your time and chances are that the people who made the choices had good reasons for it and are more experienced than you are. Learn from your seniors - it may be hard when you’ve just read about this new “paradigm X which solves all problems” and you believe you are smarter than others - but please try.
A mistake I often see is too many “suggestions for improvement” too early. This behavior, when excessive as it often is, is perceived to be invalidating tough choices that were made before your time and chances are that the people who made the choices had good reasons for it and are more experienced than you are. Learn from your seniors - it may be hard when you’ve just read about this new “paradigm X which solves all problems” and you believe you are smarter than others - but please try.