what veggies for vegetarian ?

Hi folks
I'm 50 years old male, vegetarian for 5-6 years - strictly no meat nor
fish.
Recently i got first gout attack. My doctor prescribed indocid to kill
pain, but suspect it may not be gout because blood test should 0.41
urate not exceeding gout threshold.
what did i eat caused uric acid to elevate ?
now what should i eat among veggies ?
Thanks in advance for advice.