How to become an actor?Watch
I'd guess there are quite a few routes. I think some actors start out by getting experience as Extras - more to observe what the world of acting is like before you go into it headfirst. Other people go to drama school or acting classes. Other people get private acting classes. Some people go straight in and try out for open auditions. Some people experiment with collaborating on acting for youtube videos, student films or even music videos to help gain experience. Even something like debating or toastmastering can help coz it's practice in performing (that's how the actor Josh Gad started out - you can put "Josh Gad debate" into youtube to see).
If you are attracted to one sort of acting world more than another it helps give you direction - eg theatre vs film vs tv vs improv
That is possible. There are several entry routes into the industry. For example you could study it at a local college for a few years. Alternatively you could contact local or foreign theatres and cinemas to find out if they offer work experience or not.
A third pathway is to learn all about the acting world and what to expect whilst working behind the scenes on a tv show that is made for Netflix or a movie. Number four option is to assist behind the scenes with physically disabled folk who love acting. Fifth option is to call or email agencies directly to enquire about any unfilled vacancies at present.
Again teamwork skills are needed. And strong communication ability. You will also need to possess a levelheaded attitude, a growth mindset, a willingness to learn, patience and the ability to stay calm under pressure too. The ability to handle rejection professionally is not a option either.
Good luck. If you have any real life experience of directing or acting in plays at school that is a advantage. It helps also if you have experience of acting in any shape or form. No job is too small really. If you have any valuable experience of working hard behind the scenes that counts. Honestly making it in the acting world is far more about the right skillset and experience more than any qualification.