The creator is @ epyy.emma on instagram, and for me to use it I just had to credit her properly, so does anyone have it in night. (or could make it in night)
Since you got it from someone I doubt that anyone has that BG in night. There is probably a rule that you can’t edit their backgrounds. If the creator is still active try asking if they have one or could create one for you. If not try using a filter. You also shouldn’t probably be posting the background on this thread because that might also be a rule. It is most most creators.