Common chord connections in C major.

C-G/B-Am-C/G-F...
I found out that he wasn't actually using 135 in C
C becomes 1235
Am is not 613, Am has become 6515,
F also becomes 4515
Therefore. I found that as long as he keeps the bass constant, but changes in other notes, it also sounds good.

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Then I made some attempts. A simple chord progression
C-Am-F-G, I used to remember this 135-613-461-572

Then I made some attempts. A simple chord progression
C-Am-F-G, I used to remember this 135-613-461-572

However, today, only the bass remained unchanged, the bass was still C-Am-F-G, and other notes were changed in C major.
Just like this picture, I found it to be very pleasant to listen to.
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So, I have come to a conclusion. Before, remember chord progressions, remember chord BASS progressions, and try other notes more to find better chords?

Is my way of thinking correct?

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