Help w Balcony Garden

Help w balcony garden

We got all of these plants from bunnings at the beginning of January 2025 and now we’re REALLY struggling I cant figure out if I’m over watering or under-watering or its a combination and that the sun is too direct (living in Sydney) or if there is much hope of getting them back growing!

Or best recommendations for plants in this type of heat, sunlight?

and help on how often I should be watering my plants… my roommate and I were hoping for a small veggie & herb garden (our herbs do seem to be doing well)