Question I'm trying to play games but my fps is going down to 30. How do I fix this?

Mar 3, 2022
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Acer Nitro 5 AN515-57-536Q, recently bought at least 1 week ago.

cpu: 11th gen core i5-11400h
gpu: gtx 1650
ram: 8gb

i dont know what keeps happening, ive tried everything to fix it and still