The 23-year-old has not performed a lot aggressive tennis in current months after withdrawing from the French Open earlier this 12 months, citing psychological well being considerations.
The match in Cincinnati was her first since bowing out within the third spherical at the Olympic Games in Tokyo.
“I assumed that, for me, I felt a bit hesitant, and usually I do not really feel that approach,” Osaka informed reporters after the 3-6 6-3 6-3 defeat.
“Of course, I put myself on this place by selecting to not play that many tournaments, so, yeah, simply feeling extra snug with it, feeling extra assured in myself, as properly, as a result of I really feel like there have been instances the place I used to be doubting myself.
“I additionally thought that my efficiency in Tokyo was additionally lingering in my thoughts a bit as a result of I felt like I used to be overly aggressive there.”
It comes because the four-time grand slam champion continues easing herself again into the game after taking a break to guard her psychological well being.
After withdrawing from Roland Garros, she revealed she had been coping with nervousness and bouts of despair and says she discovered it tough chatting with the media throughout tournaments.
“I felt like I discovered rather a lot from this match right this moment, and if something to remove from this, I attempted my finest all through all the match, so I can sleep at night time,” she added.
Osaka will hope to rediscover her kind in time for the US Open on August 30, the place she is a two-time champion.