I’m sad because when David say something about more X-Files episodes, so many of the fandom call him a liar, say he’s leading them on, he just wants attention for it since it’ll be only him and not Gillian. Like I didn’t hear >any< of that. David was really happy and excited for more episodes and he wouldn't have the reason to lie. I also don't believe he would does more without Gillian. Ever. I wish people would be nicer to him.

I don’t know who said that, but they’re fooling themselves. There’s no Xfiles without Scully. She means everything to Chris Carter, he won’t agree to it without her, and David either. I believe part of his excitement about doing more is that they’ll work together again. If you remove her from him, he probably won’t do it at all.
I’m not even talking about that fact that Mulder is still dying on a bridge, where obviously Scully and their son are his only chance to survive, so they can’t make her disappear.
Fox want 10 episodes, Gillian will probably agree to do 8 and David will do 2 on his own. It’s fair, she’d done two seasons and a half without him, he can do two episodes, but he won’t do more without her.