Noob help, no wifi Fedora 36 LXQT

This is correct. You need to install the proprietary driver for your Broadcomm hardware from RPM Fusion:

https://rpmfusion.org/Configuration

followed by

sudo dnf install broadcom-wl

Info on the package:

$ sudo dnf info broadcom-wl
Last metadata expiration check: 0:02:57 ago on Fri 09 Sep 2022 10:10:12 BST.
Available Packages
Name         : broadcom-wl
Version      : 6.30.223.271
Release      : 19.fc36
Architecture : noarch
Size         : 24 k
Source       : broadcom-wl-6.30.223.271-19.fc36.src.rpm
Repository   : rpmfusion-nonfree-updates
Summary      : Common files for Broadcom 802.11 STA driver
URL          : https://www.broadcom.com/support/download-search?pg=Legacy+Products&pf=Legacy+Wireless&pn=&pa=&po=&dk=&pl=
License      : Redistributable, no modification permitted
Description  : This package contains the license, README.txt and configuration
             : files for the Broadcom 802.11 Linux STA Driver for WiFi, a Linux
             : device driver for use with Broadcom's BCM4311-, BCM4312-, BCM4313-,
             : BCM4321-, BCM4322-, BCM43142-, BCM43224-, BCM43225-, BCM43227-,
             : BCM43228-, BCM4331-, BCM4360 and -BCM4352- based hardware.
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