I mucked up and now seeking help

I have the Voxelab Aqulia X2 printer, all was going well until yeah until i brought a BLtouch and i changed the bed to a magnetic sheet.

And now the hot head is hitting the bed i have installed the BLtouch software from voxelab and its still hitting the bed, akk this was about a year ago, yeah i mucked it up i couldn’t fix it at the time so it got stored away until now…

I am still new to 3d printers so if you do know the answers you need to treat me like im about 10 yrs old, no wait make it 6, no hold on they would no the answers and probably not mess things up in the first place, treat me like im in my 50’s please

Any posting to me could be a answer to the next time i do it wrong.
Thanks in advance for looking