I started grocery once per week,
but i notice veggies die so fast like long beans and spinach after 4 to 5days

Very annoying leafy green stuff taste like crap and annoying to prepare and not long last
I eventually only get carrot tomato beans and kimchi but feel like i lack some nutrition from green leafy veggies.

I want to eat them daily What do?

Stop eating vegetables and go carnivore…your body will thank you

If they spoil fast then its good vege. Sometime i buy from pasar malam walau after 1 week still look fresh

Quickly throw it

Now on your issue how to maximize shelf life - i use trick. I wrap the vege in newspaper for leafy greens. It last longer a little and make sure when you store them they are not wet.

For stuff like chilli ginger those kinda stuff i will put into freezer. Include beans too coz freezer is the best if you want to preserve the food but space is a problem la

Go for sturdy greens such as kale, collard.