Phrasal Verbs HELP vs HELP OUT - Basic English Grammar

In this video, Alisha answers 5 questions. - Could you please tell me which one of these is correct if I want to emphasize an action in the past: "I did speak to him" or "I did spoke to him"? - What's the difference between "help" and "help out"? - Could you please explain the expression "very next day"? What's the difference between this and "next day"? - Please could you explain "do fine" and "to make do"? - Can you explan the way to use "No longer". Does it sound wierd if you say "I no longer have ability to fulfill my responsibilities"?