もっと努力する必要があります。

N5 もっと motto more N4 力 chikara strength, power, force N5 する suru do, perform, try N4 必要 hitsuyou necessary, need N5 あります arimasu there is / exist

N3 努 do / tsuto.meru toil, diligent, as much as possible N4 力 ryoku, riki, rii / chikara power, strength, strong N3 必 hitsu / kanara.zu invariably, certain, inevitable N3 要 you / i.ru, kaname need, main point, essence

N5 〜ます masu Used at the end of verbs, polite present or future form, makes the sentence more polite N5 〜が ga Marks the grammatical subject, highlights new information, can also show slight contrast in some sentences N5 〜と to Indicates company, quotation, natural condition, complete list, or direct connection between elements N5 〜も mo Means also, adds another similar item, often replaces particles such as wa ga or o