I was told that after using a "time" noun to start a sentence/clause, it has to be followed by a verb (not another noun).
Eg Heute habe ich kein Arbeit. And not Heute ich habe kein Arbeit.
Täglich esse ich Pizza. And not Täglich ich esse Pizza.
Manchmal ist der Hund müde. And not Manchmal der Hund ist müde.
"-lich" is one of many adjective/adverb suffixes (others e.g. -ig, -isch, -sam, -haft, -bar). Usually the rest of these adjectives/adverbs is just a word stem and not a "complete word" if you leave out the suffix. It's definitely not that easy that you take an adjective, add "-lich" and then you get an adverb (as it is in English with "-ly). "Normalich" is not a German word.