GNU/Linux Installing Lenovo ThinkPad E14 Gen 2 Wifi Driver Guide
How to Install Lenovo ThinkPad E14 Gen 2 Wifi Driver on GNU/Linux systems.
Especially relevant, if you dispose of an Android Mobile Phone with Internet Acces and you want to use it on Connecting temporarily to the Web, then See: Internet USB Tethering Guide.
And prior to Setting up the Lenovo ThinkPad E14 Gen 2 Wifi Driver on Linux you should Check your Wireless Adapter Model on Command Line.
According to the manufacturer specifications, the Lenovo ThinkPad E14 Gen 2 comes equipped with a Realtek RTL8822CE/RTL8852AE Wi-Fi chipset. More details can be found in the official documentation.

1. Terminal Getting Started Guide
How to Quick Start with Command Line on Linux:
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2. Getting Wifi Card Info
Then to Find Wireless Adapter Info
For the PCI/PCIe internal Adapters simply run the Command:lspci -v | grep Wireless
But on the USB Dongles try instead with:lsusb -v | grep Wireless
The grep Command refine the result following the matching Keyword.
And in the Output you’ll easily See the Card’s Manufacturer and Model:
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3. Installing Wifi Driver
Last, in case of Issue you may try to see: How to Update Linux Firmware!