Seems like Aimex is one of the only ones I've seen that are legit looking.
Haven't played PUBG in years so dunno what ANYONE uses chair wise.
Edit: Just double checked and realized Aimex not only doesn't have a week key (game is free) but they also don't have an aimbot (I understand it is to stay undetected more/longer)
Does anyone have aim, or is that not really a thing in PUBG, is it not popular to include?