How can I include private purchases in my sole proprietor without inviting the tax authorities to look into my personal finances?

Hello fellow entrepreneurs,

I have just started my sole proprietor and I have a question that I would like your advice on. I have purchased certain items privately that I would like to include as expenses in my sole proprietor. However, I have heard that the tax authorities can question access to my private account and credit card statements because of these transactions, as they were all made using my personal account.I would prefer the tax authorities not to look into my private accounts. I question whether it is possible to create purchase receipts from myself for my sole proprietor and to cost these expenses in my accounts in this way, so that my private account is not taken into consideration. Is this a legitimate strategy or does it entail risks?

I would like to hear your experiences, tips and any alternative methods for entering private purchases into my sole proprietor in a safe and legal manner, without inviting the tax authorities to view my personal finances. Thank you in advance for your input!