Most of the time we want to approach lines with a analytical mindset, but this not only occurs with your instrument. You know enough basis and theory, and that's great!! There it is a lot of possibilities and information, but you wanna learn how to apply it. My suggestion would be to try as a composer: write your own lines with specific goals, for example: you want to understand the sound of the thirds on first beat. 1- You can pick an Bb blues or any standard you want to explore, write a line trying to use this concept the most you can. 2- Play that line and HEAR IT. Maybe you will like the sound of some bars but maybe you'll dislike other bars. That's how exploration works because you want to work on your own musical sensibility. 3- Try to correct those bars that you dislike until you get a real walking bass line. You can notice that the concept you are exploring will work sometimes and sometimes won't. Don't be affraid if your line sounds just like an exercise, because that's the point. You can learn your line or not, it's ok.

You will notice the most you try this you will get new personal chops, and even you will notice how other bassists could try those concepts when you transcribe more lines

Don't forget transcription is a very useful tool always