Sorry I’m not perfect

I try to take care of them best as I can. Thanks for your help.
That's okay, you're here now and that's all that matters.
Sometimes we have to learn the hard way that the feed store or pet store employees actually have no idea what they are talking about and are giving out very bad advice. When I got my first betta fish, I was told it was okay to keep it in a tiny glass bowl and that it can eat the root of plants. Well guess what! It turns out they need at least a gallon of water, a water heater and animal protein based fish food because they are carnivores... my cheap $10 fish ended up costing me well over $100. I'm just glad that I actually looked up information when I got home and the poor thing didn't have to suffer

From then on I took everything pet store employees told me with a grain of salt, and always did my own research.
Yikes I didn’t know that I just thought it was what they’re supposed to eat :/
so for 7 month old roosters what brand and what do you recommend?
I think a grower feed would be perfect for them. I use Dumor 20% feed. You can also get the 17% all flock, which is cheaper. Depending on how much you are willing to spend, there are other many many brands and options. You can even do Non-GMO or organic! Personally I wouldn't go above 20% protein, because it's 1) unnecessary 2) more expensive 3) possibly hard on the bird's kidneys.
To sum
- buy pellets or crumbles formulated for chickens. It should say "complete formula" somewhere on the bag.
- don't get anything with the words "layer" in it, as it's intended for laying hens and will have way too much calcium in it.
Please post photos of your birds, let's figure out how you can help slim them down first! Being overweight to the point of not being able to walk is not good at all, and we need to get that fixed asap!