"I can't say I'm as happy," Jackson said Tuesday, according to ESPN's Jenna Laine. "I'm not winning. I'm not being as productive. For me to sit here and say I'm happy with that, I'd be lying to you."
Jackson's production has also dipped. He started the season with three 100-yard performances in four games but has posted just 202 yards over his last four outings combined.
"I know what I can do as far as big plays and explosiveness, and I know what that does to other guys," he said. "It just sparks energy."
The 31-year-old vertical threat ranked fourth in snaps among Bucs receivers last week, lining up for 48 percent of offensive plays. He recorded just two receptions in last week's loss to the Carolina Panthers, though his targets have been steady throughout the year.
"The frustration is just knowing what's in this locker room, knowing the players we have all across the board and knowing how talented it can be," he said. "It did show early on. That's the frustration. Not being able to have the results the past three or four games, whatever that number is. That's been more the frustration with me. It's not individual."