Not convinced DWP read the mandatory reconsideration I sent in

Been waiting about 3 months for a response after sending in my mandatory reconsideration and just received the letter back (denied, of course). The paragraph in the "My Decision" section has no mention of anything at all relevant, let alone referencing my mandatory reconsideration at all. It's literally just one big paragraph "further explaining" the meaning of an aid or assistance.

Another thing leading me to believe they haven't read it is they have stated "The activity of moving around considers your physical ability to stand and then move without severe discomfort, such as breathlessness, pain or fatigue". Ironic, considering a large chunk of my problems is severe fatigue.

Anyway, slight rant over. What are the next steps? I'm aware I can bring it to tribunal now but is there anything else I can do? TIA.