Windows 10 doesnt work right

Hello, I wanted to use my PC again after a year of inactivity. Since it was incredibly slow and barely usable, I decided to do a fresh install of Windows. To upgrade it at the same time, I bought and installed a 500GB M.2 SSD. I created the installation USB drive using my laptop and performed the fresh Windows install following the standard guides. This didn't work at all; the computer recognizes the M.2 SSD but not the Windows boot folder. After countless attempts—including trying to create and locate the folder with help from ChatGPT—I gave up and reconnected my old hard drive. The Windows 10 installation worked immediately on that drive, and the booting process went exactly as shown in the tutorials. I set up Windows and finished the process. However, the PC now only boots up about one out of every five times. It turns on and shows the startup screen but then freezes. When it does boot successfully, it runs for about 10 minutes before displaying a garbled image, and nothing works anymore. For reference, I have an MSI Z390-A Pro motherboard. My main question is: what can I do? I’ve considered buying another new SSD and trying to install Windows on that, but I’m not sure. Do you have any tips or recommendations for an SSD that works well with this motherboard? Thanks in advance.