I would recommend doing some more research on breeders and breeds - there are a huge number of puppy farms and backyard breeders around nowadays who will say whatever they can to sell puppies. It's not like 20 years ago where someone would have a litter of puppies and sell them in the area, these are sophisticated operations who present themselves as nice people who love dogs but actually are just out to make money.
Not only is this horrible for the dogs being breed and kept in unpleasant conditions for their whole lives then dumped in rescues but also means you are more likely to get a puppy with genetic and behavioural issues as puppy farms and backyard breeders don't care if the dogs they breed have the right temperaments and clean health, they just want the money. Google puppies and parvo - it is incredibly rare for good breeders to have parvo in the house as it is 100% preventable but thousand's of puppies die each year which is just horrific
Firstly, cocker spaniels usually need a lot of interaction and exercise and so do poodles. It is really unlikely that a mix of the two will not need a decent amount of interaction and exercise and anyone who tells you different is not being realistic or not giving the dog what is bred to do. That's not to say that there aren't some lovely cockapoos out there who are super chill and just love the sofa but there are a lot that are quietly rehomed at 9 months or so, or are crated for 18 hours a day because they are really bored and so destroy the house.
Have a look at the genetic testing recommended by the kennel club for cockers and for poodles and eliminate any breeder from your list who does not do them - some of these diseases are horrific and puppy farms do not care about the health of the puppies. They will happily breed dad to daughter etc as it's cheaper for them and they don't care if your loved pet ends up dying much too soon :(
For example, German Shepard's and labs used to have awful hip problems and I remember family dogs in the past suffering for years in some pain before they eventually had to be PTS. Now all GSDs and Labs can have their hips tested painlessly and good breeders will only breed from dogs who have good hips which has lead to a massive improvement in health for the resulting puppies.
There are some great programmes on iPlayer which will give you tips on finding a breeder and choosing a puppy - what to look for and what the red flags are I.e. lots of litters every year, lots of different cross breeds, puppies available immediately
If you like cockapoos and are happy to commit to a decent amount of company and exercise I personally would go for a miniature poodle - same size and with the same grooming look identical but much easier to get a happy and healthy puppy who will bring you joy for years to come 