You have my sympathy and solidarity. Summer is a terrible time for moulting.
We have an Eufy robotic vacuum cleaner and send that around the ground floors daily and more during moults (used it four times yesterday as one dog is super shedding at the moment).
I have a lint roller and an Amazon subscription for the refills which is in constant use (soft furnishing, clothing and the bottom of my husband's socks as he insists on not wearing slippers and carrying the fur everywhere!)
Hand held vacuum cleaner - quick and useful.
Diet? Some rescue dogs haven't had the best diet previously and it shows in their moult as they shed hair copiously until they are healthier. It can take months to resolve but it will get better once they are settled in with a good balanced diet.
I know someone, anecdotally, who never let their dog roam the house and confined it to their (large) hallway. I couldn't do this as I love my dog's companionship.
I know many people, including myself, who attempt to turn a blind eye and just deal with it and accept that it's a downside to owning a furry pet. At the moment one dog's fur is super thick, very fine, double coated. She's a rescue and some kind of mountain breed mix and I suspect came into the rescue because of the amount of fur she has/loses as it really is something else. I gather the loose fur up and put it out for the birds to use as nesting material (the birds love it) and tell her she's a wholesome nature helper and a very good girl. I've had many dogs as an adopter and rescue fosterer but never encountered the amount of fur this girl produces.
Sorry I cannot recommend any products you can buy that are supposed to help as I've never tried them. We had an expensive dog comb that takes out the undercoat which we used a couple of times but now I just use an old plastic hair comb which is just as effective. I find if I can get to the "sticky out bits" and pluck them with my fingers before they shed to the floor that helps a lot, my dog loves it as she loves being groomed and handled.
Luckily, the worst of it is only twice a year!