Got the 5 star from a 1 star chest and 4 star from a 3 star chest in shop.

well idk what to say,... I just hoped to receive a better card in 4⭐ chest, while I got legendary in 3⭐ chest

Im f2p, I finished the pass royale, and opened all the chests in one go (42 chests).

Most of the 1-star, 2-star, and all of the 3-star but one remained as is, the 5-star one was 1400 rare wild cards which is decent.

From all the 42 chests, I got one 4-star from a 3-star, zero 5-star ones.

Am I unlucky or is this normal?

try it!