Is the any way (prefer not manual) to add new water body to OpenStreetMap?
You can create OSM user account and digitize the missing lake yourself. There are a few different editors to select from but iD editor https://wiki.openstreetmap.org/wiki/ID is probably the easiest for a beginner. The link to start editing is https://www.openstreetmap.org/edit?editor=id#map=14/65.7712/29.6541 and as you will see there are rather good satellite images from Bing to use as a background.
The lake is actually already digitized 12 hours ago from now https://www.openstreetmap.org/way/550399779#map=14/65.7705/29.6449&layers=D and it is on the OSM map https://www.openstreetmap.org/#map=15/65.7641/29.6515. It may take some time before it appears also on small scales.