According to Statista, Google Play Store had well over 2.6 million apps in June 2022. With so many apps available to you, it wouldn’t be surprising if you had two, or even three, of the same type of apps. You probably have more than one browser, for example, and maybe multiple file explorers, calendars, and even audio players on your phone.
Yes, not all apps are exactly the same as some have distinct features that make them stand out from the crowd. You may have a note-taking app that is suitable for to-do lists and another note-taking app that lets you export the note to PDF. Although both are basically the same, they give you different features. In such cases, it makes sense to keep both apps handy.
However, if you have too many redundant apps on your phone, they will eventually slow down your device. It’s always a good idea to choose which of your similar apps you prefer and uninstall the others.