Reborn as a Vending Machine, Now I Wander the Dungeon

Why people rate this anime so bad? I love this anime the story character and plot are good, hope there's 5 season adapted i also love rammis when she always with MC, being his first friend ( ill put rammis to my waifu list) And my hope is after the Main character transformed into human also bring some power ups like unique skill ( as always another isekai Main character) and have nice looking and cool face. Very recommended for yall that wanted Slice of Life isekai this is nice and maybe my critic is because the main character has lack of backstory hope they gonna add it too thats all ( yall need to try )