The way I experience this is that I don't enjoy eating. Chewing seems like a chore, especially when I could be doing something else. On a few occasions when the food is extremely delicious or I'm actually hungry from exercising, I actually enjoy eating because it finally taste delicious an rewarding. Otherwise, what.a.drag! Another issue I experience is the rest and digest autonomic nervous system response after eating where I get almost food drunk. I become dumb and tired. Noises and interruptions become extra annoying. The last issue, and the most difficult one for me, is that I don't like the feeling of food in my stomach. I feel bloated, heavy, and uncomfortable.

I figured out a few tricks. One, eat in small amounts throughout the day. That way, I'm not spending too much time eating, I don't get that heavy bloated feeling, and I don't feel food drunk. Two, which is a bit more difficult is to do some exercise that really makes me hungry. That way, I create a desire to eat. Three, eat my heaviest meal right before going to bed, that way I can use the food drunk to fall asleep and feeling heavy and annoyed wont matter because I'll be laying down and sleeping. I don't know if this last one is healthy, so I might need to change it up.

I don't know how helpful it is, but for me I had to logically just pick out the components of a relatively balanced diet and then eat it every day and modify the parts I didn't like.

It's not helpful in that it requires experimentation, but once you find the combination that works you can just eat the same thing everyday without thinking about it and you know it'll hit the nutrition you picked.

To be fair, it took many years to get there and I still have days where I am overloaded and need to just resort to completely safe foods for meals (oats for me as they're pretty bland/basic).

Now I don't know if I have yet another mental disorder or if I just hate vegetables a normal amount.

I don't relate to ARFID but when I need to eat without wanting to I usually listen to/watch a video or a serie at the same time.

I relate a bit. Like @DingoBilly@lemmy.world, I have found something simple-tasting and nutricious that I can always eat when I don't want to eat but know I should: meal shakes and bars. They are rodiculously complete (including every vitamin and mineral known), and come in various simple tastes (vanilla, chocolate, apple pie). My go-to brand is JimmyJoy. They're also vegan. All you need is to mix (for shake) or drink (for bars) water with it. And have a toilet nearby as the fibre content is high. They're not super cheap but they are super easy fast and healthy so it works for me. They also have a milky liquid form now. I think Huel is similar.

Huh, I never knew of ARFID, but that fits me particularly well, especially as a kid. I will have to dig into this more.
For me, I found a relatively healthy comfort food (yogurt with granola; sometimes with berries) and have that for lunch most days. The granola makes it easy to load up on calories/carbs while it, and the yogurt, also provide a good amount of protein. Berries can add a bit of fiber. It's always delicious for me. I've been eating it consistently for years now and I've yet to get sick of it. However if you're lactose intolerant, this might not be a viable option.
Edit: reading the comments reminded me of another thing: protein shakes. I buy a container of whey protein mix from Walmart/Meijer and mix that with a glass of whole milk when I don't have the energy to make anything. It is delicious. The strawberry one tastes like strawberry milk and the vanilla one tastes just like vanilla ice cream but in milk form.
Water can be used in place of milk if you don't have any, or are intolerant, but it's nowhere near as good; it's just not the same.

It would be nice if I had more healthy comfort foods, but that's a work in progress.
Otherwise I supplement with a multivitamin to make sure I'm not deficient in anything.

Never heard of ARFID, but that describes me. Off to learn more.