A browser is the software you use to access the internet. Not all browsers are created equal. If you are an Apple user you probably use their native browser, Safari. If you are on a Windows computer most people would agree that Google’s browser, Chrome is the best but all new or factory reset Microsoft Windows systems come with only their own browser Edge installed so you have to download any other browsers yourself AND go into the settings to change the default browser to your newly download/preferred one . Some other popular browsers include Firefox, Opera, Brave…..
TIP: You're most likely going to have a better experience when using a product line from one provider. For example, Microsoft's suite of office programs runs really fast on Microsoft's Windows environment but if you were to inspect these same programs on a Mac desktop you will find that there are many missing features and it just doesn't integrate as well.