The concept is interesting and I really like the calming nature of the game. However, if you have proper audio connected, the impact sound might scare the shit out of you.
Several things I've noticed:
After some time coins appear only above the logs on the right side
Coins above the logs are hard to pick up due to the jumps timing which has to be quite precise
I spent quite some time figuring the controls for crouching (for me btw more intuitive was jump on w and crouch on s, you can add it as an alternative input)
Constant crouching makes you go slightly faster
Some suggestions:
Speed up the game with time, it will be more challenging
Maybe add some powerups, they can add some variability to gameplay
Overall, cool concept, I like it!