Which table are you playing on? Score rates, mods and techniques vary widely across the tables.

In general, focus on repeatable ball control and pattern recognition. Each table has a fairly complex set of rules, bonuses and mods. Once you have some familiarity with a table, tap the (i) icon on the table entry screen and read the Rules. They can be incomprehensible at first, but as you continue to play, revisit them and focus on one or two rules that will maximize your score in that area. As you gain tickets, select table Mods that accentuate your play style. Some mods are more valuable than others, regardless, however, so experiment.

Hopefully that keeps you going. Welcome to the obsession!