Learn English – The comparative of “environmentally friendly”

In your example, the comparison is implicit. Smarter compares the future to the present. For example,

This course will help you become a better person.

You have many things wrong here. Many goes with count nouns, much with mass nouns, and both share the same comparative and superlatives.

many/more/most:

• I have many friends.
• I have more friends.
• I have the most friends.

much/more/most:

• I have much interest.
• I have more interest.
• I have the most interest.

As for better, it is already the comparative degree of both good and well.

good/better/best:

• She is a good singer.
• She is a/the better singer.
• She is the best singer.

well/better/best

• She sings well.
• She sings better.
• She sings best.