As others have pointed out, nothing is more important than fundamentals. CB control and basic game strategy are also critically important. Some of the videos in my recent Top 10 Important Things YouTube video series might be helpful. Check them out. You might find the following particularly relevant:
Top 10 Things Pool Players Do Wrong … and How to Fix Them
Top 10 Pool Shots Amateurs Play Wrong … and How to Play Them Right
Top 10 Pool Strategy Errors Amateurs Make … and How to Prevent Them
Top 10 Pool Shots Every Player Must Know!!!
Enjoy,
Dave
Top 10 Things Pool Players Do Wrong … and How to Fix Them
Top 10 Pool Shots Amateurs Play Wrong … and How to Play Them Right
Top 10 Pool Strategy Errors Amateurs Make … and How to Prevent Them
Top 10 Pool Shots Every Player Must Know!!!
Enjoy,
Dave