So the scientific majority opinion seems to be that you are not at all helpless against those waves.
> cases go up then go down
Yes, the wave will end eventually, probably around easter if going by the previous waves. Question is how much death and damage it will cause until then. That's something that can very much be influenced.
To keep things in perspective, covid mortality in Germany was 1.2/k since the beginning of the pandemic, compared to 10/k annual death rate from all causes. Hopefully the vaccines will help keeping this number even lower. Further confounding the issue, the death certificate cause of death for infectious diseases often times masks other systemic issues, for instance people with cancer are more susceptible to die of influenza or pneumonia [2]. What I suspect is happening is that covid replaced influenza and pneumonia as the Grim Reaper of choice. Remember that flu "paused" last year [3].
[1] https://www.mayoclinic.org/coronavirus-covid-19/vaccine-trac...
[2] https://pubmed.ncbi.nlm.nih.gov/33107375
[3] https://www.washingtonpost.com/health/2021/10/08/flu-season-...