Can I use "much" before any adjective in the meaning of "very" ?

I'm not much good at knitting

I'm very much aware of the problem.

(Cambridge Dictionary)

If this sentences above are correct, why the following sentences are considered to be wrong?

He is a much interesting person.

You are much welcome.

His face is much red.

And as far as I know we can use "most" to mean "very" in some situations.

For example:

This is most unpleasant weather.

You are most welcome.

He is a most devious politician.

Can I use "much" before any adjective in the meaning of "very" ?

I'm not much good at knitting

I'm very much aware of the problem.

(Cambridge Dictionary)

If this sentences above are correct, why the following sentences are considered to be wrong?

He is a much interesting person.

You are much welcome.

His face is much red.

Can I use "much" before any adjective in the meaning of "very" ?

I'm not much good at knitting

I'm very much aware of the problem.

(Cambridge Dictionary)

If this sentences above are correct, why the following sentences are considered to be wrong?

He is much interesting people.

You are much welcome.

His face is much red.

And as far as I know we can use "most" to mean "very" in some situations.

For example:

This is most unpleasant weather.

You are most welcome.

He is a most devious politician.

Can I use "much" before any adjective in the meaning of "very" ?

I'm not much good at knitting

I'm very much aware of the problem.

(Cambridge Dictionary)

If this sentences above are correct, why the following sentences are considered to be wrong?

He is a much interesting person.

You are much welcome.

His face is much red.

And as far as I know we can use "most" to mean "very" in some situations.

For example:

This is most unpleasant weather.

You are most welcome.

He is a most devious politician.