Jol was delighted with his side's performance in Monday's 2-1 win over Newcastle, but they failed to build on that result as the Rs claimed their first league win of the season.
Adel Taraabt's double ultimately earned three points for the hosts, although Mladen Petric pulled one back in the second half as Fulham threatened to extend QPR's winless run.
"I'm very disappointed with our style of play - I can complain about the goals but especially first half we never looked to earn the right to use our quality," he said.
"We looked a bit rigid. On Monday we had players in midfield, like they had Adel Taraabt today, they need to travel and do something extra.
"We didn't do the simple things or play in the flow. I wanted to give 10 of the 11 players who played last week the chance to do it again but there were too many players not there.
"The second goal for example was very cheap and easy and the second was a deflection.
"We tried to get in their half and the passing was sloppy and they could break us away from home. Our two central midfield players could never get up the pitch and support."