Last RTs ... this is soemthing I try to stress, especially to people starting to learn. 私(わたし)、私(わたくし)、俺、おら、僕、我輩、自分、あたし、あたい and more are all technically usable as "I" but they all mean different things

Even though they all "mean" the same thing they are not all that interchangeable in most contexts.