I play Solitaire regularly but something about it still confuses me

I’ve been playing Microsoft Solitaire pretty regularly, and there’s something I’ve always wondered about.

Sometimes in Klondike Solitaire, the game feels completely stuck — like no matter what move you try, there’s just no way to finish it.

I try different moves and strategies, but occasionally it still ends up impossible.

So my genuine question is: are some Solitaire games actually unwinnable, or is there always a solution that I’m just missing?

Curious to hear what other players think.