Legends Mobile located at legendsmobile.net is an untrustworthy website. The untrustworthy website, which claims to provides downloads for EA Apex Legends for Android and iOS, is not using Google PlayStore as a source of their downloads, and takes iOS users to a malicious survey website that is blocked by popular antivirus software, when they attempt to download.
Legends Mobile at Legendsmobile.net

Any website that gives a link directly to a Android app instead of to the Google Playstore should not be trusted. This is because downloading a Android app (.apk) directly from a website is dangerous. It is possible that Google blocked from app from their store because it is malicious.
If you want to play Apex Legends, go directly to EA's website at: