Can you say sedap instead of enak?
Yes, similar to sarap in Tagalog.
can you not say 'this meal is delicious'?
How about 'This meal is good"?
Good and tasty should both be acceptable for enak as well
In English, food can be tasty and not good. Burgers are tasty but they are not good for you. Food can be good for you but not tasty.
Should be accepted also "the food here is delicious"
Surely you could say the is nice as well?
Not sure why "this is delicious food" doesnt also work or is it a contextual thing with how the words are placed?