Selling bitcoin from a paper wallet
Since the LocalBitcoin wallet doesn't have a private key import function, you can't shorten the number of steps.
You can use Electrum, it's very popular and it has both &quot;import&quot; and &quot;sweep&quot; functions. If you don't want to trust it (I do trust it, unless the computer has malware) you can use it on an airgapped computer.
That's all you need to know, good luck!