Konjunktiv II is used to be polite, to make wishes, and to talk about things that aren't real (yet). At A2 you only need a handful of extremely common forms you'll use constantly: hätte, wäre, könnte, and würde.
Types you should know
hätte
would have
wäre
would be
könnte
could / would be able to
würde + Infinitiv
would + verb, the all-purpose form
See it in action
German
English
Ich hätte gern einen Kaffee.
I would like a coffee. (polite request)
Das wäre toll!
That would be great!
Könnten Sie mir helfen?
Could you help me?
Ich würde gern nach Deutschland reisen.
I would like to travel to Germany.
Memory trick: When in doubt, use "würde + infinitive" — a safe, all-purpose substitute for almost any Konjunktiv II form, just like English "would".
⚠ Common mistake: Don't treat Konjunktiv II as simple past — "Ich hätte einen Hund" means "I would have a dog" (a wish), not "I had a dog".