lol.
yeah.. about that.
There's going to be regular enemies without weaknesses, and enemies that have lots of spells that'll throw you off.
The game ain't this long to only throw trial and error enemies at you. The differences between good players and bad players is those who fuse the right Personas and inherit the good skills from executions and other methods. Also having the right accessory to negate/diminish certain status ailments.
Nah yeah you definitely are right I was kind of over simplifying. Preparation does play a large role. Just to add on its not just proper fusing but gotta make sure the Persona's you are bringing in are all unique with diff strengths weaknesses so you can always be safe.