does anyone know where I can buy online textbooks that doesn't give any viruses because I don't have any antivirus on my laptop (its a new laptop and I haven't put any antivirus on it.)

You have to be kidding....and you are on the web with no antivirius right now...and there are good ones which are free....

Holy smoke! A brand new laptop and no antivirus??

https://www.cnet.com/news/the-best-antivirus-protection-in-2020-for-windows-10/