launching

İ just found this website but about 4 weeks ago iİ wasnt able to get on MC offlne nor online i dont know what causes this and its on every version no just 1.eight.4.

When i try to launch a new world it crashes on every single launcher even modded and on the ATlauncher i cant even get on any modpack or vannila not even on the official launcher it keeps saying that im offline so i dont know what to do. İ cant do anything now please help me i realy want to play MC again