Employee rights in case of salary reduction due to COVID-19

Ramadan Kareem!

I am working in retail with an unlimited contract. Last March, my income has been reduced by 20% due to the company's internal restructuring.

Unfortunately, the COVID-19 pandemic got even worse forcing me to be in furlough. They have reduced my income by 80% until 3 months.

At the same time, the company had asked to donate some of the Annual Leave days to help the company during the crisis. Is this legal?

The company is going to put me into redundancy soon and they have advised that it will be only for a month instead of the 3-month compensation.

Kindly advise.