I lost my Wifi speed when I trying to fix my Bluetooth

Hi everyone.
I use ZorinOS 18 on Lenovo Ideapad 5 2-in-1.
I had problems with Bluetooth on my laptop. Today I wanted to fix it. I used GPT to fix it and edited these files:

/etc/bluetooth/main.conf
/etc/modprobe.d/iwlwifi.conf

Then I noticed that my wifi have some problems. I can not open even YouTube or WhatsApp on my browser. Internet speed is so slow. I can only barely use my Signal Desktop for messaging.
After that, deleted my edits on these files and reboot. But it's still the same. Wifi is so slow.
I tried both Brave and Zen browsers.

My wifi card:

02:00.0 Network controller: MEDIATEK Corp. MT7922 802.11ax PCI Express Wireless Network Adapter

Welcome to the Forum!

What exactly did You done with it? It would be good to know what was changed.