You borrow money. You take on someone who acquires a partial interest in the business in exchange for money. If you choose to borrow money, you need to find a lender. This can be a friend, relative, acquaintance, bank, or other entity who is willing to take the risk of loaning you money. Don't count on the government for financing.
Government grants are rare and only available for limited, specific enterprises.
Most government loans are in the form of guaranteed loans through local banks. You will probably need some collateral to support the loan. Be prepared to demonstrate the ability to repay and the capacity to manage funds effectively. Borrow prudently and do not overextend yourself. There are many possible sources of capital.