I'ss lie and say to others that I don't want to ever get married, but I secretly do.
What would make you get married?
If a girl I really love asked me to consider it then I would.
Lying to someone about your marriage preferences is not a good thing to do. The entire longterm prospect of your relationship if based on a lie if you do that. You should be honest upfront so that you and your partner can find someone with similar marriage interests.
I want to avoid getting married for for now. I want to focus on myself.
If that is what you decide, then make sure that the person who your are with is on the same page.