Oh god, don't listen to others. They will also say something like this - "fatigue", "work and everything will pass", etc. You should go to a psychologist and, just in case, a therapist. That's all.
Perhaps this is a lack of serotonin in the brain, or a consequence of some diseases, for example, 'constant fatigue syndrome' can be triggered by the Epstein-Barr virus. It is worth checking hormones and getting tested for herpes viruses. Drink energy-paraparaty with ginseng and all sorts of herbs and vitamins. For example, gerimax or something like that. Breathe fresh air, play sports.
Find a hobby, get carried away. Chat with people.
The thing is, you don't get enough good emotions. You don't do anything. You should get carried away with something or someone. Artificial or natural. in any case, you should get carried away and it will all pass