I'm willing to start a business but I don't have a good finiacial support , how can I ask politely for help to start a new business ?

Who do you want to ask for support? The person(s) you want to ask will make a difference in our answers.

You draw up a business plan showing what business you want, how and why you believe it wouild work, exactly what money you willl need to start and operate for a period.

You then show it to the people you want to invest.