My two cents
Reading your words I see that you are fixed on the future and the what ifs...
Yes we all die. No one has been an exception to that rule.
Yes we will be forgotten in the future. That's a definite.
Ironically you are presently living in that future state, dead and forgotten.
Isn't that such a waste of this precious gift of life?
Look at the odds of you being born and especially in good health and in a country where you have so many opportunities.
My opinion is for you not to try to change this situation at all but rather stare deep into it and see what answers come up. Some on this journey choose to kill themselves and I can understand that but hey they will never see what tomorrow brings.
When we face our darkest fears we can become liberated from the past.
Please be attentive to now as that's all we have.