For Snapchat:
1. Go to Magisk Settings
2. Enable Magisk Core Only Mode
3. Disable BusyBox and System less hosts.
4. Reboot, login to Snapchat.
5. Now you may disable Core Only Mode and enable System less hosts and use Magisk any way you like and you can still use Snapchat.
Just follow the above steps to login.
Idk why but safety net also works only after following steps 1-4
1. Go to Magisk Settings
2. Enable Magisk Core Only Mode
3. Disable BusyBox and System less hosts.
4. Reboot, login to Snapchat.
5. Now you may disable Core Only Mode and enable System less hosts and use Magisk any way you like and you can still use Snapchat.
Just follow the above steps to login.
Idk why but safety net also works only after following steps 1-4