Please create a totally new thread, check the diet and nutrition secton of the forum, people can see your questions better there.
If you've had four rabbits before, why are you asking if they should have alfalfa and hay? What have you been feeding to them? Almost any googling of "reccommended rabbit diet" would give you the answer. But since you asked-
Clean fresh water is essential and should be avaliable at all times. Bottles make less mess but they can accumulate nasty bacteria if not cleaned properly, and it is a bit harder for most buns to get ample wafer from those. Bowls are usually easier for them to use, take less hassle to clean, and a rambunctious bun can just have a heavy ceramic bowl, or one of those lock n crocks that van be attached to some sort of grid.
Good grass hay is the staple in their diet. It forms about 80-90% of their diet and a rabbit should eat about the size (not weight) of their own body of hay. If they're eating significantly less, something in their diet is wrong. Rabbits should have unlimited grass hay, there are many varieties including but not limited to timothy, orchard, ryegrass, meadow hay, or any combination of those. Alfalfa should only be for baby rabbits younger than three months, as it isn't really hay but legume, higher in calcium and nutrients but lower in fibre. If your bun is already on grass hay, keep it that way.
Leafy green vegetables like romaine lettuce, herbs like dill, mint, parsley, and if you have somewhere to collect untreated grass like dandelion leaves, they make for nice nutritional and tasty addition to your bun's diet. They should be introduced indivodually over the course of a week or two, so that your bun doesn't get an upset stomach. Vegetables could be introduced from four months of age if they didn't get any when with momma bun.
Pellets, it depends what brand, and what age your rabbit is. Some good brands are sherwood, oxbow, burgess. For a bun older than 16 weeks, you would be okay to go with adult pellets. Make sure to read the packaging and that the minimum fibre content is 18% but the more the merrier. Calcium should stay somewhere around12% I'll surf the internet and get you some links. Keep the heck away from muesli mixes, pellets with colourful bits like corn and seeds in them, and never give your rabbit any dairy products, nuts, seeds, grains, corn. They shouldn't get those as they can seriously mess with bun's digestion.
Fruits and non-leafy things are treats. No more than a tablespoon's worth per day for a small breed like the lionhead.
Here you go, a few trusty sites i found just from googling "reccommended rabbit diet" i'll check if all the links work as well.
https://www.pdsa.org.uk/taking-care...pet/rabbits/your-rabbits-diet#contents-link-4
https://bunnylady.com/rabbit-diet/