In this day and age, you have to learn how to secure your devices including phones, tablets, computers, email and social media accounts. Use much stronger passwords and change them regularly, use 2 factor authentication, turn on the fingerprint reader, have the screen lock immediately, use incognito mode, or a secure browser, etc. and never ever leave your device alone. It is a pain in the ass to secure all these things, but you just have to learn to do it.