Updating my PC

[u/Broad-Tip-8043]

I AM AWARE OF THE DUST ON MY PC, IT WAS NOT IN USE FOR SOME TIME AND GOT A BIT DUSTY, I CLEANED IT SHORTLY AFTERWARDS

I have a PC from like 2019, very solid build which has served me well over the years. Unfortunately it is now getting very slow and laggy and I can barely play anything on it or study. I am not a complete idiot in terms of part knowledge but I am looking for suggestions and opinions on the change I intend to make.
The current parts of my PC:

CPU: Ryzen 3 2200G
GPU: Sapphire Nitro RX570 4GB
PSU: Thermaltake Litepower 650W RGB (newest part i bought probably 3 years ago cause the old one couldn’t keep up)
MOTHERBOARD: Gigabyte A320 (GA-A320M-H)
HDD: Western Digital 1TB WD10EZEX
RAM: The first piece is Corsair Vengeance DDR4 3000mhz 8GB
The second one is: TeamGroup DDR4 2400mhz 8GB (ted48g2400c16bk)
The cooler is the basic one that goes with the CPU, my PC has no SSD and the case is really random I don’t even know the name. I have small budget but I want to make some updates that I am gonna list below:
CPU: Ryzen 5 5600
Cooler: DeepCool AG400 G2
SSD: TeamGroup MP33 1TB
I intend to play games such as ARK Survival Evolved, Counter Strike 2, Unturned, League of Legends, Grand Theft Auto 5 but mostly will use it for studying. I am open to any suggestions for updates and will not put a specific budget although I want the new parts to be budget friendly because I am not currently ready to put big money into my PC.