Traveling to a GCC country while there are travel ban and cheque bounce case in the UAE

I had lost my job due to a reduction in force dated 04th, Oct 2018. I have a 1,73,000 AED balance loan in the UAE. After a long struggle, I have an offer from Qatar now.

Kindly advise:

1. Can I travel to Qatar?

2. I have a travel ban and cheque bounce case, how can I sort out this?

3. I have given 2,00,000 AED to one of my colleagues on a returnable basis (without interest) on behalf of his cheque, now he is not giving that money back because I was not there since the last year, how can I deal with him?