"waste much time" vs "waste lot of time"

[Jon]

I thought both options were correct but among these sentences:

"He doesn't waste much his time"

"He doesn't waste lot of his time"

only the first one is correct, at least according what i read

Please, Coul you take a look to the sentences and give some grammar support?

thanks again...

[Mister Micawber]

.
Neither of yours are correct; they should read:

He doesn't waste much of his time.
He doesn't waste a lot of his time.

Because the sentences are negative ('he doesn't'), both 'much' and 'a lot of' are fine here.
.
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Native English teacher at Mister Micawber's