I know this is a meme, but I always considered Yoda as winning the fight, but without enough left to fight off any reinforcements, being thus unable to finish the job. Winning the battle but losing the war, etc.
He tells Obi-Wan at the end of RotS and gives him homework.
Honestly, even before the prequels I thought Alec Guinness looking up into the air every now and then in ANH was him listening to some spirit or the Force or so.
I think it is actually canon now that he sometimes talked with Qui Gon. Before he leaves Tatooine to go save Leia, Qui Gon says something like "see you soon", and Obi Wan goes "huh that was weird for him say"
That was a theme of the prequel series, so it certainly fits. But I feel like its too cheeky by half. Like Lucas felt as though he had something to prove by making all the original named Jedi nigh unstoppable juggernauts, right up until the end. Palpatine's a badass dude. It's okay for him to be a bit scarier than Dooku.
Probably the most missed opportunity in that final movie was Anakin just stabbing Mace Windu in the back, rather than going full Darth Vader Ultra-Instinct mode and overpowering him with his Sith hate. That last fight with Obi-Wan really missed a beat, too. Imagine Anakin using his unleashed Force powers to summon a massive lava wave direct at Obi, only for him to dodge and Anakin to be peppered with globs of lava splatter in the backwash. Also would have been a great opportunity to end Padme, with Obi-Wan caught between rescuing the lava-splattered love-struck innocent Senator or his wicked apprentice, only to lose them both.