Can I do SEO on my own? Yes, you absolutely can. You really can. You can do it with no prior knowledge. You can do it with no technical knowledge. Just read.
There’s so much information out there. But let’s approach this question from a different angle.
Can you do SEO alone? Well yes, but you’ll find it much easier if you surround yourself with peers who also do SEO.
So if you’re a business owner, can you do it on your own? Yes, just learn, read, listen to podcasts, and watch videos like this.
If you’re an SEO professional, can you do SEO on your own? Yes, but you’re probably better off finding a nice peer group to hang out with. There’s so much information and a lot of things do evolve and improve and get more difficult and get easier. So having a good bunch of SEO pals around you makes that much easier. They can be in your workplace. They can be in forums, if forums still exist. But yeah, just get some friends.
You can do SEO on your own, but it’s easier with friends.