visa refusal – After being refused to enter the UK once, am I allowed to go

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So could you please help if it's possible for me to come back because the cause was canceled when I wanted to apply for a residence visa since I got married in the UK, I'm from Botswana, what should I do or contact because my husband calls me every day (proof that we communicate for a long time) but they refused to give me a visa, they say that my marriage is fake … c & Is an example of how they made my passport