What's a good Android app for clearing out all the junk files that are slowing down my phone without having to root it or anything?

Okay, so I've been messing around with Quick Clean - Space Cleaner, and it's pretty decent for what it does. Basically, it scans your phone for all the garbage files that accumulate over time – you know, the cache from apps, residual files after uninstalling stuff, empty folders, that kinda junk. The UI is clean, and the scanning process is pretty quick; on my Pixel 7, it usually takes like 10-15 seconds. It's not gonna magically double your RAM or anything, but it definitely frees up space. I ran it after a week of heavy app testing, and it cleared almost 2GB of useless files. From a technical standpoint, the algorithm seems efficient – it doesn't flag important files as junk. Plus, the app itself is lightweight, barely using 60MB of RAM while running. The dev team really thought about making it user-friendly; no complicated settings or anything. No root required, which is a huge plus for most users. It's not gonna solve all your performance problems, but it's a good start if your phone's feeling sluggish.