Nymeria (My dog's name) is 6 month old husky, she is really sweet and I love her more than anything, but we have a problem, we live in the apartments so I decided that we should try outdoors toilet thing. sadly I can walk her only 3-4 times a day, but I thought that would be enough. The main problem is that she poops like 6 times per day and it's clearly not normal, or is it? give me advises about how to teach her to do her things outside, please

Did you just get Nymeria, or have you had her for awhile. It helps to know if this is a new behavior change or not. Also, if she's brand new to your life, have you had her checked out by a vet yet?

Dogs typically have a BM around 1-5 times a day depending on age, breed, feeding schedule. Puppies need to go more often than older dogs, but I'd think by 6 months, you should be done to something a little less than 6 times per day.

What is your feeding routine? Dogs have a much shorter digestive track than humans. A dog typically needs to go within an hour of eating. Mine also seem to like to make a stop anytime we are going for a walk as the exercise apparently helps clean the pipes out.
If you are free feeding (always keeping food available), she may just be eating often, hence having to go to the bathroom frequently.
If you are going for walks (which may require a break to relieve herself), and then feeding, well, then she's going to need another trip outside.
You may want to consider your feeding schedule to see if it may be leading to the problem you are having. For example, if you take the dog for a walk in the morning before work, then feed them, then go to work for 4 hours....the dog needs to take care of business before you get back.

How is the consistency? If it's runny or really soft, you may be overfeeding her which could also mean extra bathroom breaks.

Once a dog does his business in an area, he may see that area as ok to continue to do his business there. You need to reward the correct behavior, and really do a good job cleaning up after any accidents to get rid of any scents (enzyme cleaners).

If your home when this is happening, look for clues as to when this is happening, and train her to have a behavior to indicate she needs to go to the bathroom (ringing a bell by the door for instance). Ring the bell, take her out, give her a treat for going to the bathroom, and take her back in.

Dave gave you great advice, I will add, if you feed a grain inclusive diet your pup may not tolerate it well, so beyond how much and how many times a day are you feeding, but what are you feeding?

As stated above some sound advice - ours poops probably 3-4 times a day (she's 6 almost 7 months)
recently she's had a bit of a funny tummy and found we were overfeeding her as the consistency wasn't solid so we cut back what we fed her and it cleared up within a day.