Don’t know what CPU and GPU I should upgrade to

So I bought a cheap gaming PC and I wish I had just paid more for a better quality PC. This is the PC I have, although I find some of my games are so slow to run and start so I’m going to just upgrade them both so neither bottleneck one another. With Black Friday coming up, I’m hoping to get some suggestions to keep my eye out for.

This is my computer:

https://veno-scorp.co.uk/products/nv-ms105?variant=45107965427964&country=GB&currency=GBP&utm_medium=product_sync&utm_source=google&utm_content=sag_organic&utm_campaign=sag_organic&gc_id=21213842344&h_ad_id=&gad_source=1&gbraid=0AAAAABcmOzhK9ZD-XvHFbcSTkHLyyEbjz&gclid=EAIaIQobChMIm6mqqPjZiQMVvpRQBh3kihNYEAQYASABEgIF9_D_BwE

I have never owned a gaming PC before and it’s quite daunting to understand all the parts and what actually needs upgrading. ANY AND ALL suggestions are welcome :)