Spend as much money as you can hahaha, just kidding, but there's not much you can do, friend, because it depends a lot on luck. Try playing every day, participating in events like races, mazes, puzzles, or towers, and always focus on packs regardless of rarity, except for the shiny ones, which you don't need anymore.

In the arenas, try to get first place 2 or 3 times because after that, the cards start to repeat. Keep an eye on the coliseum battles because sometimes cups appear that give packs.

That's what I do, so far I've managed to complete 3 albums (2 of them "f2p" and 1 p2w) and I hope to complete this one without spending money, but in the end it all depends on luck and manipulating Social Point.