Welcome to the forum! It's great to hear that you are now free
I'd love to hear more on what you went through and how you came to live on your own. I'm going through something very similar myself right now so would love to hear your story for some encouragement
My father was an abusive Muslim who gave me serious death-threats every time if I wasn't a 'Good Muslim', and my Mum was the classic example of a the 'kind' Muslim psychopath - kind only when her offspring followed the Islamic religion fanatically, otherwise an absolutely heartless woman who, once during a normal mother-son meal, threatened to butcher me if I was to 'be Gay' or not read the Qur'an (dear, dear; knowing now that I am not even religious). I'll have to brush-up on my past memory, but the whole story consisted of long-term family enforcement and potentially fatal demonstic violent against a stubborn teenager who wouldn't let threats get to him.
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The first step is acceptance of the fact that you do not want to be Muslims, and ensure you read into why you don't want to be Muslims - and be absolutely sure that you believe that those doctrines in your intuitive, judgemental view are incorrect. Once you accept, then you will feel the rebuking urge of wanting to free yourself and accepting your new self - your Un-Islamic self; that is hard if you have family who are Muslims, but easy if not.
If you have a family who is even 'moderately Muslim', then chances are that they won't collaborate with the idea of you leaving Islam. And if such is the case, then you must re-evaluate which is of higher importance: your freedom and liberty or your family's opinion. Choosing your freedom and liberty must only be done if you are sure there wouldn't be a risk of abuse, so ensure that, if you choose that option, you eliminate that.
From then you can make the transition into becoming whatever you want to.