HI, I have observed a trend that as soon as i start opting for self ship my sales going down dramatically.. I tarted self ship due to sever cases of returns and baseless refunds done by amazon. Is this some algo designed by amazon to reduce the probability of winning an order if less business shared with amazon?

Same happened with advertising campaigns...Is this experienced by other sellers too?

This is happening despite price reduction by 25% and great republic sale going live.Very difficult to work with Amazon