What do you like to eat and not eat and what is your meal prep time like?
If you could afford Hello Fresh then you should easily be able to afford regular groceries. Those delivery services are expensive.
I'm single so I just cook for me, but I keep my food costs low by keeping my diet simple and clean.
I don't make recipes. They require a lot of ingredients for the most part and few things that I am ever going to finish as a single person.
I eat a cut of meat and veggies. i cook my meat either pan fried, baked or grilled. I eat various cuts of steaks, pork and fish. I create variety in the method of preparation and the spices.
The one thing I do splurge on is spices and spice blends. I purchase spices at https://www.penzeys.com/ they have a lot of sugar free and salt free spice blends. I also like https://flavorgod.com/ spices. They are very large containers that last a long time. I order the packs and leave the unopened ones in the fridge to keep them fresh.
I see people complaining a lot in my keto groups about the cost of keto, but it is only expensive if you are making a bunch of recipes and buying lost of specialty items.
Eating clean is very cheap. I do make recipes every now and then, but even with that I buy one container of coconut flour a year from Sam's club, and 2 bags of almond meal a year from Trader Joe's.