It's not so easy for the individual to do that. The skills necessary for pre-modern life are only taught by being raised by a group who lives that life. Nearly all such groups have been destroyed -- and even if you wanted to, you couldn't go join a tribe at the edge of civilization as an individual.
Not to mention that in many areas, it's not possible to make life by hunting and gathering because biodiversity in the natural environment has been destroyed. So, it's not really possible as you say.
Even though it's not really possible, such bullshit is worth giving a bit of thought, at least.
You can use the internet for two more years to learn, THEN go into the wilderness. I would even allow you to take some tools from industrialization, maybe a knife made from steel and proper clothing and a tent. Fair?
As for suitable areas, there are still undiscovered tribes living in the Amazonas. I think you may still be able to find some places where you can live your dream.
Not to mention that in many areas, it's not possible to make life by hunting and gathering because biodiversity in the natural environment has been destroyed. So, it's not really possible as you say.
Even though it's not really possible, such bullshit is worth giving a bit of thought, at least.