Screen tearing/lagging problem

My Specs:

Cpu: Intel core i5-4440 (Haswell)

Ram:4gb ddr3 1333 Mhz

Gpu: Amd Radeon HD 7770

Macos: Ventura 13.7.1

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I have already search this problem before but find no solution

(I may not be online if I am in school)