Upgrade or no? Please help me decide.

Hi, this is my current build. Im planning to upgrade.

*Ryzen 5 5600
*MSI B550M Pro VDH WiFi
*16gb 3600mhz 2x8gb Tforce Vulcan
*512GB WD SN530 NVMe
*ASRock RX6600 8G Challenger D
*750w AC750 Full modular 80+ bronze
*Hyperclear black dual chamber case + 3x aRGB fans

This is the uograde that im planning to buy:

R7 5700X (tray)
Assasin 120 Spirit EVO DARK cooler
1TB Lexar M100 2.5 Sata SSD

Not knowledgable with pc build tbh. Is this okay? or you guys can recommend a better upgrade for my pc? Thanks!