Ceiling light - Yeelight YLXD50YL too bright and noisy!

Has anyone found a way to lower the brightness of the ceiling light Yeelight YLXD50YL? It is too bright even when I am at 1%.

Also, I have a super bad buzzing sound. This is so annoying… Is that a s****y model or what? I even did not connected the ground wire…

So far, I would not advise anyone this model!