Get a new CPU
Just get a 7th gen i7 or a 9th gen i5 then.. Google doesn't give a sh*t about your old ass computer, because the majority upgrade their systems. You should also get new RAM and maybe a new motherboard to support it. Use PCPartPicker if you don't know how, because you can build a part list with compatible parts. Even those who know how computers work (like me) use it as a guide to stay on budget.