One of the most practical solutions for helping someone who struggles with mental health, which has worked for me and other people, is to always give at least three options when it comes to seeing that person struggling. Showing patience and care, while not being judgmental, give them two or three options when it comes to them being in a bad mental space. Option one, sit with the person and listen to them if they choose to talk about how are they are feeling, always ask if they want you to give your opinion or if they simply want to be listened to. Option two, if they want you to just sit with them in silence, neither of you have to do anything, some people just need another person in the room with them, and I would know, I am one of those people where I do not want to speak, but I do want company. Option three would be to give them space, reassure them that you would be checking on them every so often, offer water or snacks, and during those times that you go check on them, you can always offer the options again while trying to not be overwhelming. While this system might not work for everyone, it is an option, and it keeps both parties from feeling socially drained or as if they are being a bother. Instead of overwhelming the person going through the whole "what do you want me to do?" and leaving them with such an open question they sometimes struggle answering, it leaves them with options, and it keeps everyone grounded one way or another.