Using MOD APK files can indeed pose a risk to your phone. While not all MOD APKs are harmful, there is a significant risk associated with using them.
One of the biggest risks is the potential for malware and viruses to be installed on your device. This is because when you download and install a modded APK, you're bypassing the official app store's security measures. Some MOD APKs may also come with annoying adware.
Moreover, downloading a modified APK can potentially get you banned from the real app's servers.
While some modded apps might not be harmful, it's generally considered risky due to the potential for encountering malware, viruses, and adware.
So, while some sites may claim to be safe, technically no site is 100% safe to download from. Therefore, it's recommended to always use caution and stick to official app stores when possible.
This doesn't mean that all MOD APKs or all MOD APK websites are harmful, but the risks are certainly there. If you decide to go ahead with it, make sure to do thorough research and only download from trusted sources.