Dell boot problem

I use dell Inspiron 15 3530. I had problem with operating system after update so decided to use dell recovery. I installed os from it but my network adapter stopped working/driver uninstalled. So installed the driver back. And then setup my computer, which then gave a lot of software issues, so I thought of installing windows 11 again from usb. I booted to my usb with windows 11 in it and tried to install only faced by an error it was in mbr. I didn't understand it because how then did my laptop run windows 11 . So when I went to cmd (shift +f10) , when went to diaskpart and typed list disk it said disk 0 which was not gpt and it had only 82 gb even though my laptop had 953 gb and it was unallocated too. So I just blindly converted to gpt. And then again an error came (which I forgot) and restarted the laptop. In boot menu now I couldn't see usb even though it was attached so I went to my old windows 11 operating system which had the bugs. Then I went to advanced startup and cleaned my disk 0(which showed 953 gb this time) from cmd. After tht both my ssd and usb weren't there in boot menu. Went to bios. And I couldn't see it too. Resetted bios, no solution. Now it shows only uefi https boot which I tried and is useless. Support assist recovery connects to internet but while downloading it says file too large and stops. I believe the disk 0 I saw in the first as 82 when I booted from usb was my pendrive which I change to gpt.