Hello,
Preflop is fine.
Why do we cbet so small on the flop - I'd bet $0.1-$0.12 on the flop here.
When he minraises, calling is fine.
As played, I prefer check/raising the turn here.
On the river I would check/raise there as well. I can't really see any 4x in his range at all.
Best,
Plamen