Your log doesn’t show any module loaded for
the WiFi. I think your ideapad has the new 802.11AX wireless standard and the chip may be the RTL8852A or AE.
I think i would try the AUR package rtw89-dkms-git
yay -S rtw89-dkms-git.
Edit:
https://www.phoronix.com/scan.php?page=news_item&px=Realtek-802.11ax-rtw89