One of the first things you should do when you get a new Android smartphone is change the default apps. All major smartphone brands tend to offer default browsers and mail apps, but most of them are not up to the mark. For example, Samsung smartphones come with the Samsung Messages app as the default messaging app, which is not in the same league as Google Messages. Similarly, Google Chrome is a better browser than Samsung Internet.
You might also want to use your favorite browser, SMS, and mail apps instead of the apps your smartphone manufacturer has set as default.
Android allows you to easily change the default apps, so you can use the ones you like. To change the default apps on Android, go to Settings > Apps > Default Apps, and choose the apps you want.