Ceiling lights and light bulbs turns off automatically!

I have an issue I can not solve and really bothers me.
I have 2 Yeelight ceiling light 450C and 2 1s lights bulbs. they are in my livingroom.
for some reason every couple of hours\minutes all the lights just turn off! i dont know why and with no specific pettern . just go off! it drives me insane and i can not solve it! please help!