Tablets ealry/mid mapping ?

i'm at mid mapping and i can't find any dam tablets also still not a single abyss in my map. all i got is from the towers and it's only the irradiation stuff. Also i'm not sure if there at least one special event on every map beside the vaal temple. Tablets, event all feel very scarce.

Yeah i barely found any tablets after doing 8 maps. Just logged out last night and havent been back since.