Meilleur vs Mieux

Question

Does French follow the same linking verb + adjective convention as in English? Linking verbs, which include "to feel", link the subject and the predicate so are followed by adjectives, not adverbs. In the kwiz, there was "Je me sens mieux." I feel better. Of course, "feel" can be a transitive verb also as in "feel an object," so a person can feel (it) better, in which case "better" is an adverb.

Maarten Kamp · Accepted Answer

Don’t forget that ‘je me sens mieux’ is using the reflexive/pronominal verb ‘se sentir ‘ , not the verb ‘sentir’. In other words there is a direct object here (which is the same as the subject - je/me ), and ‘mieux’ is an adverb.  See also the link below: 
https://progress.lawlessfrench.com/revision/grammar/how-to-use-sentir-bon-versus-se-sentir-bien?