Japanese speakers
Mistake: Pronouncing every letter as "A ROTTO OBU" with three separate words.
Why: Katakana English preserves each syllable and cannot easily produce the flap-t + of-reduction chain.
Fix: The t of "lot" flaps, and "of" reduces to schwa: [əˈlɒɾə]. Written informally as "a lotta" — that is exactly what native speakers say.
Korean speakers
Mistake: Producing aspirated [tʰ] and full [ʌv] for "of", giving "A LOT OBEU".
Why: Korean prosody favors clear articulation.
Fix: The t flaps and "of" collapses to schwa: [əˈlɒɾə]. Same reduction as "kinda", "sorta", "cuppa" — "of" almost always reduces in speech.
Spanish speakers
Mistake: Producing clean [t] and full [v] for "of", over-articulating.
Why: Spanish preserves letters more faithfully in speech.
Fix: Trust the reduction: [əˈlɒɾə]. Both the t and the v disappear or transform in casual speech. "A lot of" is essentially one word: "a-lotta".