I have a question about teeth whitening for health concerns.

Maybe because I drink coffee frequently, my tooth color seems to be gradually changing. I tried purchasing whitening toothpaste and whitening solution sold online, but it seems temporary. Should I reduce or stop drinking coffee? I have had scaling at the dentist, but I haven't tried whitening yet. For those who have undergone whitening, is it effective? I think it might also be temporary, but if it causes sensitivity or pain, it might be hard to endure.