How to recover formatted ext4 created on lvm partition

I need to recover a ext4 that was created on a lvm filesystem as I accidentally formatted it by mistake from ext4 to ntfs using disks in Ubuntu desktop The lvm is a 7tb partition made up of 1tb, 2tb and 4tb drives. The lvm was created using gpart and webmin lvm management tool as I'm a noob when it comes to command line stuff