Kuroro Lucifer's Room

Exiled forces VS Skill drain: Skill drain ruling, look for "If the Monster is Not Face-Up"

Bottomless Trap hole Vs Gorz,: Gorz is activated ruring the DMG step, BtH cannot be chained in that phase of the game

Scenario, can Krebons effect be activated as a chain link 2 or above: Krebons cannot be activated as a chain link 2 or higher since his effect is Speed 1

You did well in game play but you need to step way from meta cards in order to learn more complex rulings and effects, go into the question room and start reading the stickies on Advanced chains, Difference between activation cost and effect, and inherit vs Non inherit.