You say in english

Question

The French drinks a lot of wine.
The Swiss makes good choloclate.

Is there a national adjective without "the"??

Answer 1

You've used those nationalities as nouns.

We might say

Swiss trains are on time.

French wine is the best in the world.

Answer 2

I found the rule that national adjectives end with -ese; -ch; -sh; -ss goes with the, it's in my grammar book that way, and now I'm lconfused wether there are some without the.

Answer 3

Be sure you know the difference between nouns and adjectives.

Your examples are nouns (The French drink a lot of wine.)

My examples show the same words used as adjectives.