Hi and welcome !
You've been given some great advice, and I agree. Take it gently, ease into it, and cut out the main suspects like bread rice potato, pasta, etc. Add in more lovely veg, and see how it goes. If you are hungry, add mayo to salads, butter to veg, and coconut cream to curries, because fat fills you up even better than carbs do.
It is actually really easy to eat high fibre low carb. All the veg and salad, deserts made with chia seeds, breakfast low carb meusli, Lidl high protein rolls (replacing bread). Psyllium husks and linseeds...
Have a good browse around in the low carb section and you will find some stunning recipes.