Windows 10 unable to troubleshoot

Hello,

I have an Asus laptop running Windows 10 and occasionally, it would lag (even offline while I am going through images like cropping a photo or clicking through document files- it would take 3 seconds for the action to occur)Apart from that, the start up would take tremendously long time.

But since last week, I couldn't get past the black and/ blue screens after powering my laptop on ...

I've already tried some, not all the troubleshooting available in the Advanced Options because even the loading alone doesn't always allow me to the next step as it shuts down instead. So I am tired of repeating the same cycle over and over again.

I'll just briefly list the ones I WAS able to try and the messages I got from them for reference:

Automatic Repair----- Automatic Repair couldnt repair your PC... c windows system32 logfiles srt srttrail.txt

Uninstall Updates--- Not sure if it did anything because it didnt display another page 

Reset this PC: Keep Files.... tried both Cloud download and Local download and it both said "unable to download" 

Command prompt : I tried the 'recoveryenabled no' and 'safeboot minimal'

Now I downloaded Media Creation Tool from a working computer in a USB but I cant even get to the blue screen. Is this how I can get it back? Or are there other options?

I also wanted to make sure if I do this, will it get rid of personal files? If not, how do I make sure that I retain my files because I dont have a back up of all of them.