Question 1: Why are you childless?
Get to the bottom of it! As a first step, become aware of why you are still childless. The reasons can be completely different for each person.
Perhaps you have not yet found the right partner. But it may also be that you have not yet known that there are special online partner agencies for the desire to have children (co-parenting). Or you were simply content without a child and were not prepared to make any restrictions (job, holidays, finances, home, consumption). Ultimately, it could also be for completely different reasons.
Every single reason is perfectly legitimate and can help you come to terms with your desire to have children.