Food is "too good"?

I like food. I especially like food I didn't have to prepare.
It's not that I can't cook or won't cook. But I feel so tired so much of the time. That I want something quick and easy.
I have forgotten how to be stable and balanced. I used to cook nearly every other night after work. Because I cooked enough for a day or 2.
But these days despite finishing work at 2pm... I'm shattered!
Since about 2018 ish I've been feeling this overwhelming feeling of tiredness and consequently because of it I just don't have what it takes to muster the strength to do very much.
I walk my dog 3x a day which helps me to keep fit but I feel like I don't really sleep anymore.
And my weight has increased.
My eating habits aren't always the best but they're also not the worst.

So yes buying food fast is more appealing.
When you feel so tired all the time.
Sometimes I go as far as not eating meals 3 or 4 nights in a row.