Last time I rode a bus was about 7 years ago, good riddance. I walked to the auto-parts store to buy a new truck battery. Then I carried it to the nearest bus stop and waited about 25min for a bus. He told me I couldn't bring my battery on the bus. Then I had stuff my battery in my backpack and wait 30 more min for the next bus.
Pre-pandemic at least the bus worked pretty well for one specific use case, commuting from the suburbs into the city, and halfway decent for commuting from one area of the city to another although usually I found walking or Uber to be a lot more versatile for the latter case.
If you want to get from one suburban city to another good luck, here that means take a bus into downtown Seattle and take another bus out to the suburban city. Getting from one major city to another is not much better. It can take hours for a trip that would be 30 minutes by car. Many trips require transferring from one bus to another which adds additional delay and if your bus is delayed and misses the last run of the connecting bus or the connecting run is canceled you are screwed.
Since the pandemic the bus system has suffered. They are short staffed and ridership is down so routes have been reduced and specific runs are often cancelled on short notice. More than once I've gotten stuck downtown and had to find a way to kill an hour before the next bus run but I had to be careful not to miss that one since it was the last run for the day. They have an app for finding routes and tracking buses but it is absolutely terrible, it's difficult to navigate and there are frequently phantom buses that show they are on time on the app but then they simply never arrive.
The people planning the system seem to be idiots too. Many of them are so anti-car that they push to eliminate free parking at the park & ride lots or even eliminate the lots entirely. Sorry but if I don't happen to live near a convenient bus route and there's nowhere I can leave my car that is safe and doesn't cost a bunch of money to use then I'll just drive my car the whole way instead. If you want people to use transit instead of cars, start by offering reliable transit that meets people's needs, don't just be hostile to cars and try to make driving as inconvenient as possible. That just makes me avoid those areas entirely. Seattle is very car-hostile, nearby Bellevue on the other hand is very car friendly, the streets are wider and have turn lanes, the businesses all have ample free parking, it's cleaner with less crime, I take my business there whenever possible because it's more convenient.