The SW universe is massive, thousands of star systems with dozens of planets in each system. The jedi kept peace in the main populated areas of the galaxy, the planets with large political presence, etc. Shmi Skywalker lived on Tattooine and said "the republic doesnt exist out here." So that means the jedi rarely showed up around those parts, if at all.
Not every planet knew of jedi, maybe they heard stories, and chose to believe they were true or not. Anakin asked Padme if she was an angel, and she laughed at the question as if she had no clue what he was talking about. He said he heard deep space pilots talk about them.
The imperial officer called it "ancient religion" because he knows it was popular a long time ago. If Kenobi says the jedi were around for over 1,000 generations, there may be people who would say "that's such an old way of life, anyone who follows it today is nuts!" Especially since the jedi were all taken out and its been nearly 20 years since anyone has even seen a force user in public.
Han was around the galaxy for about 30 years before meeting Luke and Obi Wan and learning that the force was real, he didnt believe it even if he did hear about it. It all comes down to believing the stories, because there's not enough evidence to prove the jedi were real. If there's no proof, the people who were young during Order 66 will just have nothing but faint memories of jedi. Even then, there's probably punishment for speaking about such "troublemakers" so the jedi are swept under the rug in 3 decades.
SW doesnt really *need* force users to be SW. In Episode VII, Han was dealing with lots of scoundrels from all across the galaxy, and none of them were jedi. Proving this universe can have hundreds of characters who can live a full life and not mention the force, just doing other things in space.
I havent watched a full season of Clone Wars, and I havent watched any of Rebels, so I'll be a bit lost on who these live action cartoon characters will be. I like how they want to connect the cartoons to live action, but it shouldnt be to The Mandalorian. I was hoping this series would pull away from the force and focus on characters who live without being bonded to the Skywalker saga. Like, actually expanding outward instead of making the galaxy feel like its the size of the hollywood backlot, where every 10 feet is something recognizeable and famous.
I enjoyed season 1 and hope season 2 is just as fun, but if it does just wink at the camera to show "its all connected" I'll have to live with it. It would be cool to see some jedi, but only if the action is brutal and something fresh.