Certainly possible given when it happened.
"On November 12, 2020, a GoFundMe page was created on her behalf. Coates was experiencing excruciating pain in her left leg. She was quickly admitted to the Emergency Department at the University Medical Center in Las Vegas, where doctors observed several
blood clots in her leg. Despite several procedures to save her leg, doctors observed that the blood clots were spreading and were life-threatening. Thus, doctors had no choice but to perform life-saving surgery, requiring the amputation of her left leg from above the knee. As a result of this medical emergency, Coates incurred substantial medical bills and was put out of work for an indefinite amount of time as she rehabilitated her injury.
[26]
Coates died on June 23, 2021, five days after her 50th birthday.
[27]"
en.wikipedia.org
I would think though that if it was Covid that it would be mentioned somewhere since so much emphasis was placed on it. I think chances are it was not.
a cause of death has not been listed.