Ok, but another weird thing is that even on disk3s3 you have another Recovery filled.
Anyway before attempt this unplug any external USB hard disks, USB drive and unmount any DMG (also eventually DMG app you were installing) mounted on your desktop.
Then try this (
only for @tchek current APFS scheme not valid for the others) boot Mojave from your Samsung SSD normally, then launch Terminal and type:
diskutil mount disk2s3
diskutil apfs changeVolumeRole disk2s3 R
diskutil apfs updatePreboot disk2s1
then type:
open /Volumes/Recovery/0608AF9E-CDC3-4D01-8520-ED1DD50C8D22/
landing on Finder using TextEdit or any other plain-text editor launch
com.apple.boot.plist
Inside it first check
the green part if matches with your file, in this place add
the orange part (in one line) close and save:
<string>root-dmg=file:///0608AF9E-CDC3-4D01-8520-ED1DD50C8D22/BaseSystem.dmg -no_compat_check -v</string>
Now, reboot and hold CMD+R after power-on chime, if you still can't reach APFS Recovery, post here a picture of your verbose screen.