Credit Note Debit Note in GST Retun

sir

pl guide me on following-

i am supplier and under QRMP for month of 4th Qtr 20-21

for march21

1. received goods as return (proper debit note yet to receive)

should i ask for debit note or issue a credit note directly ?

2.i have to show debit note on GST portal or my receiver have to perform

3.where i have to show credit note on portal GSTR 1 Or GSTR3B or else where too

4 same i have to fill on GSTR 1, 3B for same month or i have to do it on April as consolidate under QRMP

5. where to post in my side

6.should  i have to issue separate credit note to party or GST portal entry is sufficient

7 as i learn from forum - taxable amount less credit note = net taxable amount for cgst sgst liabilities

same i gave to do with value of CGST SGST less CGST SGST value of credit note= net tax liabilities

pl reply and correct my

regards