I'm going to lie to my parents and tell them I'm infertile
Why will you tell them you're infertile?
They would criticize me for living that kind of lifestyle (being queer).
Don't lie to your parents about being infertile. That is hurtful to them. You shouldn't lie.
I'm not really lying, I read somewhere that  infertility is not just about not having kids.
I know but you should not keep your parents in dark. You should be honest about sexuall preferences and your life choices. I'm sure your parents will accept the way you are.