Where to Buy Lord of the Rings Online Game Cards: Which Game?

I need clarification to give a precise answer. "Lord of the Rings online game" could mean:

• The Lord of the Rings Online (LOTRO) – MMORPG (PC). Cards: Subscription time, expansion codes (Mines of Moria, etc.). Buy on LOTRO.com, Amazon, GameStop, Steam Wallet.
• Middle-earth: Shadow of Mordor / War – Single-player action (PS4/Xbox/PC). No "game cards"; buy digital codes or discs.
• LOTR: Return to Moria – Survival crafting (PC/PS5). Buy on Steam/Epic/PS Store.
• LOTR: Heroes of Middle-earth – Mobile gacha. In-app purchases only.

Tell me the exact game and what the card is for (subscription, expansion, currency), and I'll point you to the right store.