Banks typically do not check or monitor what you spend the funds from a personal loan on. Once the loan is approved and the funds are transferred to your bank account, it is up to you to use the money as agreed upon in the loan agreement.
Keep in mind, however, that misusing the funds from a personal loan can have financial and legal consequences. If you use the loan money for something other than what was outlined in the loan agreement, you are technically in violation of the terms of the loan. This could potentially lead to penalties, legal action, or damage to your credit score.