The amount of the natural resources on the earth will not increase.
And the traditional not circulating resource will be exhausted.
Such as petroleum , coal...etc.
The human race should try to develop and find new resources earlier.
How to develop the natural resources of the earth in an
appropriate amount and recycle them?

Alternatively, we find substitutes

Glass fibre (silicon) has been replacing copper for quite some time.

We are literally swimming in a sea of energy, it is just that we have
not figured out how to use it .. yet.

Well, to answer this meaningfully, you'll need to define your terms.
What sized population do you propose to support? What variety of
species will be in this population? What personal liberties will they
be afforded? ("Freedom" can be quite expensive.) For how long a time
should they be supported before being resigned to extinction?