I’m always fairly torn by these numbers (I’ve done a lot of research and tracked this[1]). There’s a lot of confounding factors... The lockdowns increased the rate of suicides substantially. Largely suicides occur in people 65+, so a 100% increase in suicides would be some 150k deaths in the same age range as COVID. https://www.nimh.nih.gov/health/statistics/suicide.shtml Murder is also up some 50% and there were rio…
Looking at the NIMH link you sent, I'm not sure where you're pulling that data from as 65+ isn't in the chart but some quick maths shows it would be about 9k people, so your assumed 100% increase would only lead to an extra 9k deaths from suicide in that group. The total for all age groups is 48k, so you'd need a 200% increase in all ages to get to that number.
However, if we look at this, based on CDC data: https://jamanetwork.com/journals/jama/fullarticle/2778234 "From 2019 to 2020 ... suicide deaths declined by 5.6%." So you really need some strong evidence to back that suicides went up at all, let alone by 100%. It would also be very difficult to blame false attribution of suicide deaths to Covid-19 without equally strong evidence as there are usually pretty strong clues to the cause of death in suicides.
The riots & associated high levels of aggression between social groups did not lead to a high number of deaths, definitely not enough to have a significant impact on total deaths, unless you have a good source for that claim.
Murder rates seem to be up by about 36.7% across the US, but even then that increase is not enough to cause a significant bump in the numbers. There are normally about 870 deaths per 100,000 in the US due to all causes. Murder is about 5 in 100,000 (2018) so a 36.7% increase in that 5 gives 7, an increase in 2 per 100,000. That's an increase in the death rate of 0.23% due to increased murder. The CDC number I just checked is a 15.9% increase in deaths for 2020.
https://www.npr.org/2021/01/06/953254623/massive-1-year-rise... https://www.cdc.gov/mmwr/volumes/70/wr/mm7014e1.htm https://www.cdc.gov/mmwr/volumes/69/wr/mm6942e2.htm