Sabalenka was the worst possible preparation for her as she was able to benefit from so many gifts, gifts she was never going to get from Swiatek. She quickly became disillusioned when she was not being presented with the same opportunities, and when you become disillusioned and the head drops double faults will happen more often (she already had by far the most of those in the tournament).
Just don't think she had any answer. At her best she could have made it more respectable, maybe 6-3, 6-4, though in saying that Swiatek has been known to bagel quite a few opponents. She hits it so deep that makes returns much harder, whereas returning against the more limited Sabalenka is much easier.
As they said in comms Sabalenka was dreadful throughout the tournament (again), but relied on sheer power (amongst all the wayward shots) to overpower previous opponents. It's an indictment on the women's game that you can play as poor as she has in every game yet reach a Wimbledon semifinal. She's a poor number 1. Swiatek with some form back should retake that easy. Still baffled how she managed to lose to that in Paris.
That's the one major weakness of the women's game, power can take you really far. In the men's as everyone has power its effectiveness is much more limited (bar Ivanisevic who was an exception with that serve of his which got him one slam). You need much more to your game in the men's game. Once someone returns your shots, as Swiatek does, then your limitations get exposed.
Serena Williams was able to capitalise immensely from such an advantage in power (as was Navratilova who had forearms reminiscent of a bloke), walking past all these slips of a girl. Against Graf, that power was matched, and then add the vastly superior game of Graf (and that whipped forehand) you end up with the dismantling of Williams in their last "contest" before Graf's early retirement at 30 for family reasons. Had Graf hung around for a few years those tantrums of Williams would have ramped up tenfold with no cannon fodder allowing you to scoop up titles galore.