Yes, the photo shows empty pads where at least two of the four components were pried off the board. I can see at least one of these parts sitting nearby. You must remove these loose, damaged components and solder new parts on the board. Loose parts can bounce around inside your phone and cause more damage.
Your guide shows exactly the WRONG way to pry off the battery connector. NEVER pry along the right edge of the connector, and NEVER attack the connector from a high angle. This deadly combo is almost guaranteed to break components.
Pry the connector at the narrow edge furthest from the home button where there is nothing to damage, and use a shallow angle of attack so the pry force is mostly upwards.