@Keneda To be honest i don't really know what the problem was. I followed every step on how to install ubports to OPO and by doing that i bricked it because the program stopped seing my device in fastboot and all that happened in Win 10.
Anyway after all that process i did to try re-install ubports with ubuntu and not Win 10, it finally let me enter in fastboot mode and nothing more and even then i couldn't see my OPO in device manager ( something weird in my opinion cause i heard the connection sound when i plugged in the device).
And you know the rest of the story with adb/fastboot commands.
So i guess all that was a huge bug from Win 10 side.

So if someone bricks his OPO so hard that he cant actually enter neither to fastboot or recovery then he can try this method.
Use ubuntu in a pc and then try to install ubport for OPO. At first the app will say that it cannot detect any device in fastboot mode and thats okay because after that you will be able to enter in fastboot.
After that you have to be sure that you PC is able to detect your device with fastboot commands even if it can't be showed in device manager. In my case i could see my device by typing fastboot devices.
And the final step is to flash the stock rom with fastboot commands.
So it seems like you cant flash ubports with windows OS but only with ubuntu otherwise your phone will be probably bricked.
Anyways thank you guys so much for your support and i hope this forum will help anyone else with the same problem i had with this device.
P.S: sorry for my bad english.

@AppLee If its possible please add SOLVED to this forum cause i finally managed to unbrick OPO.

Thank you guys a lot for your support.

@Luthenor The more recent all in one tool is not detecting my device.

@Keneda Before i answer your question i am a new member here and i don't really know what i had to do first before i create my first post sorry for that i am nervous. So about device manager, when i am plugging in my OPO it shows nothing. I can't really see the qualcomm port and thats a big deal because i cannot update OPO drivers.

@Lakotaubp I tried the ADB version from the xda forum and all i got by typing adb devices to see if my pc reads my OPO is that:
C:\adb>adb devices
List of devices attached

• daemon not running. starting it now on port 5037 *
• daemon started successfully *

Whatever i do with adb commands and drivers or reading forums about same issues with the one i have i cannot find any solution to my problem. I also tried multiple combinations with power + vol up or down and still nothing. I don't know if there's a way to restore OPO to factory state. Anyway thank you very much for your time, and i'll keep trying to find a solution.

I tried using adb commands to boot my device on bootloader mode and it showed me this message on cmd
C:\adb>adb reboot-bootloader
adb server is out of date. killing...

• daemon started successfully *
  error: device '(null)' not found
  So my computer cannot read my device.

@Lakotaubp Win 10 Pro 64bit

@Lakotaubp I was installing from LineageOS 16.0 .

@AppLee I checked the forum and i got some tips but the core problem is that i don't have access to anything. I can't enter to fastboot and recovery. Also my pc doesn't recognise any port so i can't actually update the qualcomm drivers.

@Lakotaubp I tried to boot to recovery mode by holding vol down and power button multiple times but didn't work so i don't really know how to clear cache and do factory reset.

While i was trying to install ubuntu touch on my OPO i bricked it. I had all adb drivers installed on my PC but still the tool couldn't read them and i guess it semi-installed the ROM on the phone? Anyways now my OPO is stucked on the powered by ubuntu supported by: ubports screen and it cannot reach fastboot or recovery mode at all. I can't see the qualcomm port on the device manager. Before the failed installation i had lineageos 16.0 and twrp recovery. Any thoughts on solving this problem?
Thanks for your time.