It’s not you it’s the people around you who make you feel safe. You were never the problem but the people who judge you by stammering are the ones trust me. I stammer myself but not that bad and can have a comfortable Convo with a stranger. My family and friends supports me and never judge me by this so if your stammering is that bad then you should look for speech therapy and with time it will definitely get better. God bless you and please don’t give up