The pandemic really had a huge impact on almost every niche of the business. Sports betting remains one of the very famous and still solid types of online gambling. This is actually somehow good rather than playing some boring machines.
Well, I don't think slot machines are more boring than a computer screen.
Of course, in an online game you have a lot more betting options (double or split the amount, odds, win chance and others).
However, nothing... nothing beats the thrill of winning a jackpot (or dreaming of winning) and seeing the machine drop countless coins "all over you".
As this pandemic goes leave, I'm sure the casinos will get back to full. Online gamblings will continue to be accessed much more than before, but wil not steal customers from "conventional" casinos.