Hello, a few days ago I bought an Acer Nitro 5 AN515-56. I have been updated all of my drivers and did it everything what I need to do. Firstly I downloaded CSGO, and started to play but my FPS value was very low

I just got 50-60fps. I closed to value fixer but nothing changed. Then I downloaded War Thunder, and when I was trying to play the game warned my it's say "You are using integrated graphics card please use external graphics card to get better performance." and then I removed GPU0(Intel(R) Iris(R) Xe Graphics) in device manager for only use GPU1(NVIDIA GTX 1650). It worked, GPU1(NVIDIA GTX 1650) activated then I was opened War Thunder, and I was got 5 FPS. After that I have been activated GPU0(Intel(R) Iris(R) Xe Graphics) in device manager quickly. When I was activated GPU0(Intel(R) Iris(R) Xe Graphics), GPU1(NVIDIA GTX 1650) still worked. Then opened War Thunder again and I got 30-40 fps same as before. Later, Intel Driver and Support Assistant gave an update warning, I did the update and then GPU1(NVIDIA GTX 1650) stopped working... What can I do?
Thread was edited to add model name to the title