Double check your Badges page to make sure you have drops remaining in those games. At a glance, you have enough playtime in most of your STC enabled games to have received all of their free drops.

Free-2-Play games to not give any free cards just for adding them to your Library, you must spend 9$US for each drop.

Non-F2P games only give half (rounded up) the total number of cards in the set. Duplicates will count against your allotted free cards. Trading/Selling/Using your free cards will not give you additional/replacement cards.

Due to changes in the Refund policy, you need 2 hours of playtime before normal card drops begin. Most games drop a card roughly every 30 minutes which means most games give their first card at 2.5 hours of playtime, but the game's developer can increase the drop rate up to 1 hour per card. After the initial 2 hour, running multiple games drastically reduces the rate cards drop if not completely preventing drops so do not play a game while Idle Master is idling.