If the mobile website fine for you, you don't need to get an app. I used the mobile website in my phone's browser with no problem for a few days before I started trying out apps out of curiosity. So far, I've settled on the Liftoff app, but again having an app isn't necessary because of how well the mobile website works. I'm not someone who needs an app for everything and I prefer it when mobile websites are useable. Reddit made me angry when they made their mobile website annoying to use by trying to force people onto their app. I used a 3rd-party app instead, but now that's going away so here I am on Lemmy.
If you don't want to bother with Lemmy apps, you can create a shortcut to Lemmy.world on your phone's home screen which can make it faster to open up Lemmy as if you were using an app. Since you're using Chrome, I'm assuming you're on Android, so here are some instructions if you want to add the shortcut.
How to Add a Website to Your Android Home Screen
Hope that helps!
Edit: Also, if you do want to try out an app, Here's a post with some Lemmy apps that are currently available. If you need any more help, just let us know!
Edit 2: I just found this well-curated app list from Lemdro.id that includes app descriptions: https://lemdro.id/post/4319