Should we try to understand the things we internalized that were projected onto us while growing up, or just let them go?

The projections mostly include others insecurities or repressed shadow aspects. But since I internalized them, I attracted more negative experiences, which made these projections feel like parts of me too. Should I empathise with people and their experience that made them have these shadow in their psyche to integrate this or just ignore them and focus on the consequences of the internalised projections that was given by others but became part of me ? Sometimes I feel it's not actually intentionally they passed it to me , it's more like a result of hierarchical view which is part of evolution, I feel less urge to put these people who projected their Shadow on me as villian in my life , now I know I should take time to understand myself and integrate my shadow at the same time I should put effort to make healthy boundaries so that I'll not just absorb others projections , and one more thing is like is it the projections that includes their shadow stuff is the root of the repressed stuff in our psyche ? It's like the root cause is the way we absorbed needed guidance and that's why parenting is a hell zhitt job ... Do u agree