Question I need help upgrading one of my two computer builds.

[TooMuchViolence]

I have loved video gaming since the 1970s, and this will probably be my last gaming system. I have very limited funds and want to make every penny count.
I wasn't planning to buy the PlayStation 5 Pro, but I am considering upgrading one of my PCs for gaming and video editing.
If any mix-and-matching can improve one of these computers, then add a video card, power supply, and RAM.
What is the best I can achieve without using water cooling? Both computers are running on win 11. Monitor is- QNED80 Series 50-Inch Class QNED Mini LED Smart TV 4K Processor Smart Flat Screen TV for Gaming
Here are some short questions:
What is the best video card I can get based on my current setup? Should I add more RAM, or is the RAM I have already outdated?
I am willing to spend between $600 and $1000. I would really like to experience the best in computer gaming, but that seems out of my reach. Thank you for any help you can provide.

 

[Why_Me]

Can you list your current PC specs please.

 

[TooMuchViolence]

Can you list your current PC specs please.

I apologize for the missing info. I may not have copied and pasted everything correctly. This is a 2022 build.
Intel® Core™ i5-11600K Desktop
be quiet! Pure Rock 2 150W TDP CPU Cooler
ASUS Prime Z590-P LGA 1200 (Intel® 11th/10th Gen)
CORSAIR iCUE 4000X RGB Tempered Glass Mid-Tower ATX PC Case - 3X SP120 RGB Elite Fans
CORSAIR RM Series (2021), RM750, 750 Watt, 80 Plus Gold
SAMSUNG 870 EVO SATA SSD 500GB 2.5” Internal Solid State Drive,
CORSAIR VENGEANCE LPX DDR4 RAM 16GB (2x8GB) 3200MHz
Monitor is- LG QNED80 Series 50-Inch Class QNED Mini LED Smart TV 4K Processor Smart Flat Screen TV for Gaming.
Forums have changed a bit since my last visit.

Can you list your current PC specs please.

Can you list your current PC specs please.

Can you list your current PC specs please.