Once you delete it from your device, it's typically removed from your local storage and cannot be accessed by your ISP. However, if your ISP has previously stored your browsing history, deleting it from your device will not remove it from its records.

If you use the Chrome Browser on your android phone and have the Chrome Browser signed into the same Google account on another device like a computer, someone could see your search history there.

Use a Browser Security Tool If the browser stores ads or popups in the search history, you may say: Google history showing searches I didn't do. Besides, it may appear due to more serious issues like a data breach that damaged the account. In general, it is caused by malware.

Not anyone but internet service providers, hackers, the government, search engines, and others can collect your data for malicious purposes. For example: monitoring, censorship, targeted advertising, and many more.