Suicide. Because he's writing a letter and he's holding a gun. If its a murder, the room would be messy and there will be signs of resistance.
Murder. The gun is in the right hand and the splatter is on the right side. If they were facing the letter, the gun would have been in the left hand in order for it to have been a suicide.
I think she just got tired of everything and was misrible and wanted it to go away so she tried to mut herself out of her own misery.
Suicide Cigarette in hand, alcohol bottle in bin showing he was stressed. The blood splatter is in the right direction. And the direction in which the dead body is lying. No other signs of struggle or fight. Letter could be a suicide note. Fallen seat.. And oh well a gun in hand.. PS: I also understand that someone else can create the scene to make it look like a murder.. But I still go with suicide..
Murder There are signs of struggle. ?♀️ Lady seems to be a lefty, inferred from the cigarette in her left hand and pen on the left of the paper. Coke is on the left too. She shoots herself with her right hand? She was shot from the left. The position of the gun does not align with the direction from which she was shot. The gun. Most of the time the recoil forces it out of your hand. Assuming she shot herself in the head, she'd immediately lose all capability of self control. Hands and other voluntary muscles will relax and she'd drop the gun. Additionally, I imagine it'd be awkward(depending) to hold a gun to your head, so it's not likely that the gun would remain in her grasp. Just some person trying to frame a suicide lol. In some cases the gun stays in the hands of the person, but my guess is murder ?♀️
Gun is in right hand and the blood splatter on the wall suggests he was shot from the other direction as he was writing the suicide note facing the table. Hence it's a murder