Sims4 rebooting after startup

@Viyolah  Thanks for providing a dxdiag, which would have been my first request.  Yours shows a number of serious crashes of the graphics engine, plus three crashes of iCUE that point to an Nvidia resource.  So my first question is, when you swapped out the graphics card, did you clean-uninstall the Nvidia graphics driver first?  If not, that's the problem, or at least the immediate problem.  In that case, please clean-uninstall the Nvidia driver, as described here:

https://crinrict.com/blog/2019/02/clean-re-install-of-graphics-drivers-with-display-driver-uninstaller-ddu.html

You don't want to (and likely wouldn't be able to) reinstall the Nvidia driver, so skip that part of the process.  If this doesn't help, or you did already uninstall the Nvidia driver, run DDU anyway to look for the driver, and remove it if DDU finds anything.  If not, clean-uninstall and reinstall the AMD graphics driver, as described.  You can get the newest driver here:

https://www.amd.com/en/support/graphics/amd-radeon-rx-7000-series/amd-radeon-rx-7800-series/amd-radeon-rx-7800-xt

By the way, I take it you meant that you swapped out your 1050 ti for an RX 7800 XT.  A Ryzen 7 3700X is a processor, not a graphics card.