So Bud/Coors are light lagers. Using all DME is not going to make a light lager similar to Bud/Coors. The problem is an all DME beer will have too much "body" and won't be light enough. So you want to use at least 25% corn syrup or rice syrup.
https://www.morebeer.com/products/b...tu3h1DiFmYn79kFBEO2-kbsNUUHIZD6oaAjX2EALw_wcB
Corn syrup is way cheaper, look at the label to see if it has preservatives. Rice syrup will make it more like "Bud".
You don't even have to boil a big kettle of wort if you don't want to. Make a "hop tea" with about a gallon of water and boil that. But for sanitation you should heat your water to about 180F or so and then dump in your extract/rice syrup. Not boiling the extract will provide a lighter color to your beer.
The next problem you need to deal with is using lager yeast and and providing a cold fermentation environment. You can get around this by using SF lager yeast or just not worrying about it and using a clean ale yeast. Going forward you can make a cheap fermentation chamber by using a large square cooler and frozen plastic water bottles.
You may want to reduce the standard 5 gallon recipes by half, so you can see how the beer comes out and make adjustments later on. Also, if you are a Coors light drinker, buy it in the 16oz aluminum screw cap bottles. Rinse out right after drinking and save for bottling your homebrew. Bud used to have aluminum bottles as well but I haven't seen it in a while.
Here's a good recipe to try, but I'd change the hops to Willamette and reduce the amount by 1/2 the first try.
https://ballastpoint.com/wp-content/uploads/2019/02/American-Light-Lager-Extract-Recipe.pdf