https://www.forbes.com/sites/daneberhart/2018/07/10/why-president-trump-is-the-biggest-player-in-world-oil-markets-today/#20c276c9724e
https://www.cnbc.com/2018/11/23/trumps-quest-to-drive-down-oil-prices-turns-the-screw-on-american-drillers.html
Trump is all over the Saudis, who are producing in response to his reinstating sanctions on Iran and selling them arms.
Yes, it's supply/demand. Yes, Trump is actively working the supply side. Therefore you presented a false choice.
You're an idiot because you don't even keep an open mind about the possibility you could be utterly wrong about a subject you clearly don't follow with any depth whatsoever.