You're showing some great listening power there. Those are some of the stronger notes you'd use to build a bass line. Try experimenting with the "blues scale" or mixolydian, essentially the major scale with a flat 7th. For now most bass lines are gonna be single notes as opposed to chords, but that's a rule worth breaking. And at last, a blues song that's fairly "entry level". Try it out.
currently listening old radio songs (indian old songs) with silent music background. Night here so the ambience is like silent waves going through ears while listening songs
I was lucky enough to see the last and best lineup of Motorhead in concert a few times. Motorhead at their absolute best right here !!!
Great job! Root 5ths and root 8vas are some simple chord shapes that you can try, I sometimes use them to fatten up a line, particularly at the end of a song. As for the mixolydian, try dropping the 2nd, 4th, and 6th. Now you have a great blues scale.