Please go to your preferences page and make sure your "See Mature Topics" setting is set. Setting it to "Yes" means you see the Mature Topics forum (contains political and religious debates). Setting it to "No" means you do not see those threads.
Your English sounded pretty good to me. Please don't let that hold you back from participating in discussions. Welcome to the ADISC support site. I have two children myself, though they're both now grown. There's a few other parents on ADISC, so I know you can get some support from a parent's perspective here.