For me ,Overall of my personality I'm quite introvert in real life and Online but sometimes I'm super talkative to anyone for teaching or giving some of my knowledges that I actual know about. Also I'm often join voice-chat in Discord to talk with my local friends ,this one is the reason that I feel more confident and talkative than before as well. I can be both introvert and extrovert person at the same time in my hometown .
About online in global SNS or any community sometimes (maybe many times) I feel a bit worry about my English communication cuz I might make some peeps misunderstand what I actually wanna tell to them T-T But I still wanna make friends who have something in common from around the world although I'm look quiet to chat with peeps in English.
Anyway, If I feel comfortable when I chat to someone (although chat in different languages) and never made any problem toghether.I can be "a chatty person" to them as well.
Ps. If anyone being good to me I also being good to them and I'll help them if they have problem.
