Should I waste less money?
What is your end goal with not wasting money?
I want to live comfortable.  I can't do that if I waste my money on dumb things.
Good for you for being cautious with spending.  It is bad to waste money on fleeting things.
I'm just not that good with spending money.
That is an admirable quality to possess, you should be proud of your frugalness. Saving money will help keep your quality of life sustainable and secure your future.