GoKawiilThe Google Play Store is home to millions of apps, and it's also where developers push updates that introduce new features and squash bugs. I've been an Android user all my life, and in my experience, app crashes have mostly been caused by buggy updates rather than something being wrong with the phone itself. So, if an app has been acting strangely, heading to the Play Store is one of the first troubleshooting steps worth trying.
To do so, tap on your profile picture in the top-right corner, select Manage apps and device, and under the Updates available section, check to see if there's a newer version of the troublesome app waiting to be installed.
If there are no pending updates for you to install, you can dig a bit deeper into the app's settings. There are two ways to go about this. You can either long-press the app's icon on your home screen or app drawer and tap the tiny "i" icon to access the App info page, or head to Settings > Apps and select it from the list of installed apps. Depending on your phone's version of Android, these options may be labeled a bit differently.
While you're in the App info settings, tap on Storage & cache and select the Clear cache option. Head back, tap on Force stop and try launching the app again. Clearing the cache removes temporary files the app has stored that could have become corrupted. Android has had this neat cache management system on a per-app basis for years, which can also help speed up apps that have become sluggish over time.