exp.: Can I became a police ? 2exp : Can I be a police? not >> can I become to be << is wrong

Hello, I am a native English speaker. First of all, 'can I become to be..?' is incorrect. Use this template: 'Can I become (a/an) _____? The correct way is (I am going to use 'doctor' as an example) : 'Can I become a doctor?' Another example; 'Can I become an Australian citizen?'

"can i become to be...?" --> Can you please give me a sentence or some context. Then i can answer your question better. :)