Note that you're likely paying $238 and still not getting a legit copy of Windows. If you don't have a volume license agreement and a minimum of 5 Windows licenses, you aren't supposed to use the LTSC version of Windows, and they're not supposed to be used for primary desktops. Also you're supposed to have a Pro license for the machine BEFORE you buy LTSC, so that's just more extra costs. You might as well just save the money and pirate it. Not that this will make any difference in practice if you're just using it at home, but still, people should probably know this.
I believe you can buy individual copies from a reseller who buys copies in bulk and they are able to create keys in their own licensing portal to resell individually. I believe CDW either is a reseller or partners with Advantech.
If the cost is the issue, I'd probably go for gray-market reseller keys over pirating. Looks like they run $6-20 these days, someone could simply search for "windows 11 iot keys" to see offerings - pick whichever site either seems the least shady or is cheap enough that you're okay losing the money. Always use something like privacy.com to protect your CC info when buying gray-market software keys.
I believe there are bona-fide tools given to large org IT personnel to re-license installed windows as whatever you want, but if you don't have a trusted friend who can provide a trustworthy copy of that, I wouldn't trust anything pirated that claims to do the same thing. There are also open-source tools on Github which can perform the tasks of a KMS and license your copy of Windows as whatever version you want.