Yeah Grande shouldn’t burn so much oil.
Mine is over 200k newer than your model and doesn’t burn a drop of oil.
Anything less than 150k km for such models is meter reversed but it doesn’t matter Toyotas go strong even on 400k km..
The issue here is engine has some issue . You can either run it like this keep topping up OR overhaul it / do a rebuild from a reputable engine shop .