Leeds won via a late penalty for a hand-ball against James Tarkowski and converted by Lukas Nmecha.
"I have not watched it back - on the field it felt like it was a penalty," said Farke afterwards. "I was a bit worried as it was checked quite long.
"Thank God it stood. I have to watch it back to judge it properly. "
On Nmecha, he said: "The first two or three touches of Lukas were not spot on. I was a bit worried. The first touches were not great. I was thinking about saying, 'today, perhaps is not the day to take'. He was ice-cold and calm. He is a top guy and a really good finisher."
On the Leeds United fans and the atmosphere created, Farke was delighted: "Of course, for newly promoted sides it has to become a fortress. I am quite humble and grateful that we are able to celebrate.
"It is great to see the joy and pride in their eyes. It is great to give the supporters who are so emotional and care so much about their amazing club. Grateful that you can help a little bit and give them this experience."
More attacking additions
On more transfer window action, Farke concluded: "In the offence, it would be good to have a few more options available.
"To be ready for a long Premier League season we definitely need a bit more quality up front.
"At this level, you know bringing players in who improve our squad is costly. Thank god we have ambitious owners.
"We won't do anything stupid. It is not about the sum of money - you have to spend it wisely."