GNU/Linux Mint Installing Lenovo ThinkPad E14 Gen 2 Wifi Driver Guide
How to Install Lenovo ThinkPad E14 Gen 2 Wifi Driver on Linux Mint LTS GNU/Linux – Step by step Tutorial.
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 Mint 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 Mint:
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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!