Can we sustainably provide for 8 billion people?

Okay so Im into degrowth and solarpunk and stuff, but I've recently become worried that we might not be able to provide for billions of people at all because the industrailization of agriculture and many other resources requires non-renwable resources that f- with the environment/modern civilization is incredibky energy-intensive which - regardless of the shit to more renwabke forms of energy for many things - will still cause damage to the environment.

So bascially: its seems capitalism - in its obsession with overproduction and extracting as many resources from the planet as possible - may have led to this overpopulation/ecological overshoot.

My question is, am I right, because I'm worried recycling batteries wont be enough to stop this with wood, plastic, and - most importantly - food reling on pesticides and many fertilizers coming from fossil fuels as well as many of the metals we use in...well...everything! Many resources seem to require de-industralization and a return to earlier forms of farming, which would mean less food produced, and a return to trying to have a less energy intensive society in the first place because, again, how many solar panals can we build in a way that doesn't fuck with the places they are installed?

So, am i wrong? Does degrowth in our economy require the eventual degrowth in population? Or do I sound like Thanos saying we need to kill half the population or something? Because I really dont get any of this myself and could use some help evaluating this stuff. I assume others know more about the extent to which we can maintain industrialized society and gloal supply chains in a more sustainable system - do we even want/need that?