First this child personality is good not need to get rid of it AROUND THE PPL YOU LOVE OR GET COMFORTABLE WITH. Second to be a man you have to take responsibility of your actions and NEVER EVER EVER BREAK YOUR WORD!!!! If you promise someone for anything fulfill the promise and always stand on business and if u said you going to do smth you to do otherwise don't say it. 3rd if you want to be sociable person idk a lot of it just search on YouTube read books and apply those techniques you know as a man you shouldn't be afraid to talk to anyone (or u can be but have to do it anyways). 4th In our society a man will be a man when he gets a job and helps his family and provide for them so get a job I guess,build your self and your family. Change your environment and friends if u don't like them but first change your mindset. 5th do sports(this is for everyone not just males). Try to be good to ppl and build connections,be the man everyone calls to for emergency (any kind of emergency). And yeah search more on YouTube and find 1-4 ppl to watch and subscribe and be consistent. Lastly don't be hard on yourself you can grow slowly and don't hate your current self u can't grow if u hate your current self