Drivers of my Wi-Fi not added to manjaro dde

Drivers have nothing to do with the desktop environment. Most are provided by the kernel.

Perhaps peruse related posts on the archived forum:
https://archived.forum.manjaro.org/search?q=Rtl8822be

Please post your system information as outlined here:

Please also post the output of:

lspci -nnk | grep -iA2 net

You also should actually tell us what problem you’re having with your Wi-Fi.

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