As a lefty with most of the previous issues listed above.
before i really educated myself in this game, i tried to drill out the same thing mentioned above.
it came down to me just wanting to get better plain and simple
took lessons, worked on my fundamentals
found a gold level coach that changed my grip
learned how to tape a ball properly
then i learned about surfaces, layouts, etc
As a lefty by yourself most nights is an advantage on THS, but can be a huge disadvantage on the flatter patterns.
1. solid fundamentals will help alot
2. im 95% symmetrical pieces in my bag
3. most of my equipment is at least 5" pin-pap
4. get a spinner, you will learn more about ball reactions by having a spinner and adjusting your own pieces
5. practice, practice, practice whenever possible
6. have fun......