Help me decide which is better
What I currently have:
PSU: AORUS Elite 850W
AIO: DeepCool LT720
MB:ASUS TUF B850-E WIFI
RAM: Kingston FURY 6000 CL30
SSD: Samsung 990 EVO Plus 2TB
And I still have around €300. What processor or graphics card should I buy? Right now, I have a 1660 Ti, which is inside the old computer I am selling, so I can use it for the time being. So I could either buy just a processor, or would it be better to get something like a 7500F and some graphics card, or what should I do? I plan to play at 1080p at first but transition to 1440p later, in about half a year.