Whether or not you need to download antivirus software on your laptop depends on a few factors:

• Your operating system: Most modern operating systems come with built-in antivirus protection. For example, Windows 10 has Windows Security, and macOS has XProtect. These built-in solutions are generally effective at protecting against common malware.
• Your browsing habits: If you are careful about the websites you visit and the files you download, you may be able to get away without using antivirus software. However, if you frequently visit unfamiliar websites or download files from unknown sources, you are at a higher risk of感染malware.
• The type of data you store on your laptop: If you store sensitive data on your laptop, such as financial information or personal photos, you may want to consider using antivirus software. This is because malware can be used to steal data or even hold it hostage for ransom.

In general, it is a good idea to use antivirus software on your laptop, even if you are careful about your browsing habits. This is because new malware is created all the time, and even the most careful users can make mistakes.

If you are not sure whether or not you need antivirus software, you can always consult with a computer security expert. They can help you assess your individual risk and make a recommendation.