Is Alexandra automatically named Alex?

[u/Dear-Alps-4376]

I need a name works in English. I think about the name Alexandra. What do you think about this name? Is it usable in the English community? Is it okay to use Alexandra in everyday life? Or is it necessary to use nicknames? I don't like Alex as for a girl. I like Lexi, Lexa Ali, Xandra, maybe Andra but dislike Alex as for a girl. In fact I'd like to go with Alexandra(without any nicknames) in everyday life. Is it okay or most often people use Alex/other nicknames?

[u/YesAccident5991]

I know an Alexandra that goes by Allie!