Thank you for the grammar correction

Hello, Carmie

"More better" is incorrect; you use just "better". The adverb 'more' and the suffix '-er' both have the same function in the comparison of adjectives and adverbs, so saying "more better" would be redundant.

"better" is the comparative form of the adjective "good" and the adverb "well". It is one of the several irregular comparative forms in English.
good / well ------- better------- best
bad / badly ------ worse ----- worst
Others are:
little -------------------- less (lesser) ----------- least
much / many --------- more -------------------- most
far --------------------- farther (further) -------- farthest (furthest)
late -------------------- later (latter) ------------ latest (last)

"This book is 'better than' the one I read last week." ('better' is an adjective here)
"Tom cooks 'better than' Susan." ('better' is an adverb here)

To form the comparative and superlative degrees of adjectives, you add the suffix -er to monosyllabic adjectives, and to disyllabic adjectives when a) they end in –er, -le, -ow, -y, and b) the stress falls on the last syllable:
Tall ----------------- taller ---------------------- tallest
Narrow ------------- narrower ----------------- narrowest
Happy -------------- happier ------------------- happiest
Simple ------------- simpler ------------------- simplest

This rule also applies in the case of certain frequently used dysillabic adjectives with the accent on the first syllable:
Common --------- commoner --------- commonest
Stupid ------------ stupider ------------ stupidest

To form the comparative and superlative degrees, you use the adverbs "more/less" and "most/least", respectively, with adjectives and adverbs of two or more than two syllables:
"Steve is 'intelligent'." (adjective)
"John is 'more intelligent than' Steve." or "Steve is 'less intelligent than' John."
"Jim is 'the most intelligent' boy in his class."
"Steve is 'the least intelligent' boy in his class."

"Mary drives 'carefully'." (adverb)
"Ann and Sarah drive 'more carefully than' Mary." or "Mary drives 'less carefully than' Ann and Sarah."
"Of the three women, Sarah drives 'the most carefully'."
"Of the three women, Mary drives 'the least carefully'."

This explanation is far from complete, but I hope it’ll help.

Miriam