Get used to work (or school) being separate from personal. Use a different device wherever possible. If it's not, use a separate web browser at the very least and delete your device level advertising ID, don't access gmail with Chrome on an Android device since that usually logs you in at the device level, too, and don't add the login to a personal Android device to reduce some of the links between them. Just understand the risk of not using a separate device. For example, some systems will have the ability for corporate accounts like Google Workspace, Microsoft Exchange, etc., to wipe the device it's accessed from when you leave, and if that's your personal device, well too bad.