Giving way to drivers exiting lot when stopped
When traffic has come to a stop, should you let other drivers waiting to exit a parking lot on your right into the road?
I meant to let only one driver on since traffic started moving again, and I didn't start moving fast enough I guess so two more drivers ended up merging in anyway, upsetting the driver behind me.
Should I have been more aggressive moving up once the first driver merged? Or was I unlucky or the driver behind me was getting upset over normal etiquette?
Asking also as a sanity check because another driver got upset at me for slowly pulling out of an alley (it's basically making a blind turn into a small one way street, so I emerged very slowly and stopped when I heard a car approaching). Then they proceeded to get upset again when I stopped at a stop sign.
The common denominator is me in these situations, and I'm not sure if I'm just failing to pick up the right behavior or what. Any tips or input would be appreciated. Thanks!