Rashi

I said, In the desolation of my days (בִּדְמִי) When I saw my days בִּדְמִי, in desolation and in silence. Comp. (Zeph. 1:11) “For the entire people of Canaan has been silenced (נִדְמָה).” That is to say that when I became ill, I said, “I will go into the gates of the grave.” Now I will die, since, until that day, no sick person had recovered. I am deprived of the rest of my years (פֻּקַּדְתִּי) Comp. “(Num. 31:49) No man was missing (נִפְקַד) of us.” I am missing the rest of my years. Jonathan, however, renders: My remembrance has entered for good; years have been added to my years. I have been visited (נִפְקַדְתִּי) for good, and my years have been increased.