Some libraries might have physical or digital copies of the Attack on Titan manga. You could check with your local library. Also, some online subscription services like Comixology or Kindle Unlimited might offer it.
Some libraries might have physical or digital copies of the Attack on Titan manga that you can borrow. Also, check out some well-known online bookstores that offer it for purchase and reading.
I wouldn't recommend downloading it from unauthorized sources as it's illegal and unethical. You can try purchasing or subscribing to legal platforms that offer it.