Can I become an actress?

I am 21 and have always wanted to be an actress although I live in a small city and I’m quite shy and and have social anxiety. But I enjoy acting and I’m not awful at it but my only issue is I’m not great on doing sad scenes and crying scenes etc. I find more mean girl or attitude or villain scenes to be easier than emotional sensitive personnel ones. But in real life I can cry easily at any slightly sad or happy videos but when people are around or I know I have to fake it then it just seems awful and unrealistic… aside from that I just wonder if i could make it a career.
Can I become an actress?
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