Is it possible for me to become an actor even though I have never had acting lessons?

Do what your heart tells you. If you want to do acting then find a way around your mother. If its true for you then things will work out...

No - sorry, but it's not.
If your mom won't let you attend an acting school, then you can always wait until you're an adult and can pay for your own classes.
Don't believe everything you read online.
About half the 'information on the internet is either very dubious or total nonsense.

Crying on command is only one of hundreds of skills that actors have to learn - and most actors have taken private singing lessons for years.

A singing teacher teaches singing - not acting.
And acting cannot be taught effectively one-to-one - it has to be done as part of a group - a class. That's because acting is all about reacting and interacting with others - it can't work with just a student and teacher.

School stuff is a nice, gentle start to acting, but sadly nothing more. It's at a very basic level, and no-one is really impressed by what you've done in school.

It doesn't matter when you start attending acting school, but without that, nothing is going to happen.
Be patient!

Unlikely, but not impossible.

yes it's possible

You have no experience darling, you have to have experience.

I think it is possible, if so one might need to work from the bottom up that is to say from the very beginning of an ordinary staff and gradually being promoted to actor. The most important thing one must depend on the patience of job and hard working spirits.
Yip

Do whatever your heart tells you!! You can make it!!

yes

Crying on command is a brat talent, not acting talent. Brat. Go to school.

maybe