Bluehost Plugin

Has anyone have been having an issue with the plugins? I don’t think the bluehost plugin is working. I need to update the PHP thing because my site isn’t working so i am hoping once I update it, my site will began working again and I can start building it, but it seems I need plugins for it. I activated the bluehost plugin, but a critical error popped up. My site’s health performance says I need to update my version of PHP because the one i am using is outdated. Seems i can’t do anything regarding PHP or my site because it seems like I need the plugins but they arent working and it’s frustrating me.

Another note: whenever i activate one of the plugins on bluehost, my site stops working. On the wordpress site, whenever i try to activate a plug in, it says there was an error or something