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human
[Star Wars] How did only two Jedi survive (Obi Wan/Yoda) when only two other people in the galaxy knew how to sense/find Jedi (Vader/Palpatine)?

I find it very far-fetched that all 10,000+ Jedi were killed after the clone wars ended. Let’s assume that after order 66 was completed 1,000-2,000 were killed by the clones. That leaves 8,000-9,000 Jedi left who had ample time to go hide. From what I understand, in the canon, Vader and Palpatine hunt down and kill all the rest of the Jedi by either the vast amounts of intel that come with running a galactic empire or by sensing their force power. I have trouble believing that 8,998 Jedi were hunted down and killed just based on those two things. It’s not like the Jedi are stupid, they should know how to hide across AN ENTIRE GALAXY OF PLACES TO HIDE. There are literally an uncountable amount of planets to hide on. Some may say “well Vader and Palpatine sensed their force and that’s how they were found,” but if Sidious could hide his force for 80 freaking years in the heart of the city where ALL THE JEDIS LIVED why didn’t all the other Jedi do this? We know that Obi Wan and Yoda do, so why did nobody else? I just find it hard to believe that they are the only two who were able to hide their forcenesss. STAR WARS REBELS SPOILER: also if Asoka is out of hiding or whatever how come Vader hasn’t sensed her before this. You’d think he would sense his own padawan quicker than anything or anyone else, especially if he has been travelling the galaxy hunting Jedi based on their force. Anyone got an answer?
gpt
You forget that Darth Vader, as one of the highest-ranking officers of the Galactic Empire, had access to nearly all the military reconnaissance resources in the known galaxy, as well as the funds to hire out mercenaries and bounty hunters as he saw fit. Arguably even worse, Palpatine very publicly made them enemies of the state, turning even civilians into eyes and ears against the Jedi, deterring them from venturing too close to civilization lest they be identified and reported. Even with their ability to conceal themselves, the Jedi Purge was a long campaign of attrition for them against a never-ending well of military force; most of the Jedi were haggard and worn-down after being on the run for close to nineteen years, making them much easier for Vader and his strike teams to track and eliminate. Now in power, the Empire had plenty of time to be thorough, after all.

As for your specific examples:

 - Darth Sidious is a particularly unfair point of comparison. The man was exceptionally powerful in the Force and specialized in manipulation and deception; he was quite probably the most skilled Force-user in the entire galaxy at concealing himself by a wide margin.
 - Yoda explicitly chose Dagobah to hide himself due to the energies radiating from the Dark Side Cave there being well-suited to mask his presence.
 - Obi-Wan Kenobi was closely familiar with Darth Vader, and as such was especially qualified to avoid his detection, especially considering the level of fine control he gained over his force abilities through years of meditation in the Tatooine desert.
 - The ability to sense the presence of another individual Force-sensitive being requires some relative degree of proximity; there's no reason why Vader should have been particularly aware of Ashoka's presence before being within shuttle distance of the same planet as her. Space is notably huge, after all.

*EDIT: Typos.*