If this laptop never had macOS 10.6 or 10.7 installed, then it may not be possible to install macOS 10.11. IIRC, macOS 10.7 sometimes added some critical firmware upgrades that may be needed for later versions of macOS. Unfortunately Apple just assumes users are keeping their Macs up to date with every OS update and upgrading to a new OS every year which would keep the system firmware up to date. Unfortunately Apple does not provide any information or details regarding these things.
If you have access to another Mac from 2008 to 2015, then you can use the instructions in this Apple article to create a bootable macOS 10.11 El Capitan USB installer as this is the only way to extract the installer from the .pkg "installer extractor" to place the real macOS installer into the Applications folder):
How to create a bootable installer for macOS - Apple Support
Please read those instructions very carefully as there are multiple steps to extracting the macOS 10.11 installer to the Applications folder so that the Terminal commands can be used.
Unfortunately the macOS 10.7 installer you have downloaded can only be run from within macOS 10.6. I'm guessing that the .pkg file likely won't be able to extract the real installer app to the Applications folder. Even if you can extract the real installer from the .pkg file, I have no idea if there is any way of creating a bootable macOS 10.7 installer from the "Install OS X Lion" installer app located within the Applications folder. I doubt it is easy and I doubt it is possible.
If you don't have access to another 2008 to 2015 Mac, or if the macOS 10.11 USB installer won't install because of a firmware issue, then you really need to find a retail copy of the OSX 10.6 Snow Leopard installer DVD in order to get Snow Leopard installed on this laptop. After that, then you can try upgrading to macOS 10.7 Lion, then to 10.11 El Capitan.
Even with macOS 10.11 this laptop will be extremely out of date.
If you don't want to pay for a proper retail version of the OS X 10.6 DVD, then maybe you should consider installing Linux Mint (free open source OS) on the laptop instead which would give you a completely up to date non-Apple OS which has access to the popular web browsers (Firefox, Google Chrome, Vivaldi, and others) along with lots of free open source software such as LibreOffice. This would require you to learn a new OS, but Linux is not for everyone. Linux works best with 4GB of memory, but can be used with as little as 2GB of memory depending on workloads (won't be able to have more than one app at a time open, but I was able to have two or three tabs open on a browser). If you did not receive any OSX installation DVDs with the laptop, then you won't be able to go back to macOS without purchasing a retail copy of the 10.6 Snow Leopard DVD.
FYI, for a computer this old, I would be concerned about the health of the hard drive.
Unfortunately Apple doesn't make it easy to reinstall macOS unless you have access to the proper DVDs, or another compatible Mac. Not all of the macOS installers are distributed in the same manner, nor do they work the same way. It seems Apple goes out of their way to make their installers overly complex & confusing.
