パソコンの調子が悪いなぁ

Lately, my PC's response is too late to do.
These few weeks have been terrible conditions and more and more come to be bad.
At first, I was aware that when I browse X(Twitter) on Chrome.
While I open X(Twitter) on Chrome, my PC's fan's sound becomes loud to cool down itself.
If I let it be, my PC looks like takes off somewhere it seems an airplane takes off.
Then when I often browse a website, I watch a video streaming service on my TV, the noise prevents me to hear the TV sounds though.
And now, when a mail soft receives an e-mail takes a long time.
Besides that I delete an e-mail on the software and close it, I boot it again, and the e-mail that I delete often exists yet.
Anyway, my PC has many terrible stuff.
Although this might be natural, I've using my PC since 2017.
It's about time I get a new PC.
Nevertheless, my PC works hard for me.
I appreciate my PC's performance ever and now.
I want to change my PC's condition to good.