Minecraft bedrock cant conect to Galaxite server

it seems like you don't have all the ports required for the Xbox live network in your PC
Let me give you the needed ports for you to open:

Port 88 (UDP)
Port 3074 (UDP and TCP)
Port 53 (UDP and TCP)
Port 80 (TCP)
Port 500 (UDP)
Port 3544 (UDP)
Port 4500 (UDP)

Make sure to contact your Internet Service Provider for this.

Once the ports are opened, do this in your PC (After, not before)

:1. Open command prompt as admin.

2. Copy and paste below command. netsh interface Teredo set state type=enterpriseclient clientport=3074

3. In Windows, open All Settings - Gaming - Xbox Networking (not in the Xbox app) (only Windows 10)

4. On Administrator Command Prompt copy & paste the command: netsh interface Teredo set state type=client

5. Back in Settings Xbox Networking, hit the Fix It button (only W10)

6. Check again button should show not working (only W10)

7. Back at Command Prompt and copy & paste the command: netsh interface Teredo set state type=enterpriseclient

That is a screenshot

Hello again.

I was in contact with my Internet Service Provider. I also send to them a copy of your instructions.

There is no problem at the internet service

What else can i do?

Thank you

Thanks for the extra info
That helps to isolate the problem a bit more

Please try checking this:
Download and open the Xbox console companion app from the Microsoft store > go to app settings > network

Please tell me what's saying next to / below NAT type
Feel free to share an screenshot if necessary (but don't forget to hide personal information)

Hello, Josef!

Thanks for your immediate response.

You are right. I am playing on PC. I tried to connect from a different network (cell phone hotspot) and it works. I connected to the server with no problem. What can i do with my wifi network? Should i change something in the settings of my router? Or should i contact with my network provider (telephone company)?

Thank you so much for your help ^-^