"As a manager, it's not nice, but I've had it before. I've had it once or twice and it's part and parcel.
"Without trying to sound sanctimonious, I can understand them. We aren't giving them anything. Our home form, from being a fortress this place, we're getting beaten and we're drawing games instead of winning, and not scoring goals.
"I can understand the supporters and believe it or not, I thought they were alright today, I've got to say that. I thought 'Sunderland 'til I die' was terrific. If they're going to have a go at someone, have a go at the manager. He's the main man and he takes the rap. All in all, it's up to us to give them something," he told Sky Sports News.
"We aren't giving them enough, we haven't scored goals. We've had some great times here, scored goals and had attacking play and I still think we've got the players to do that. It's that little anxiety thing and lack of confidence. We need to get that back in our play.
"The supporters will come and watch us if we play good football and score goals, there's no doubt about it, but it's difficult when you aren't giving them the goods, which we aren't."
He added: "I thought we started alright and knocked it about well, had a couple of chances and didn't take one. They scored and then there was an anxiety in our play and a lack of confidence.
"And that's not taking anything away from Fulham, they came and had a good game plan and played well. But obviously from our point of view, we got ragged and indisciplined. The players were trying, but we were just all over the place and we lost our shape.
"They had grown in confidence, but for the second game on the trot, we were too easy to get through. That comes from the lack of confidence. The team before they scored the first goal and the team afterwards was like two different teams out here."
Reid now has to lift the side for the local derby with Newcastle next week, where a poor result will only add to the mounting pressure already upon the Sunderland boss.