They were calling your laptop home and they return by smell of their own excrement, since you put the machine in a bag they now will find another home.
If you put the bed post traps on, under the posts, move your bed away from the wall and keep covers/blankets/sheets off the floor, they are forced to use the bedposts to come and have a blood meal, thus get stuck in the traps.
Of course you have to remove all your sheets/pillows and carefully examine the matress/boxspring and frame for any bugs or eggs first. Change your sheets more often.
Supposedly if you use powered boric acid (fine like talcum powder) spread on a hard floor around your bed, they crawl through it and it gets on them, then they clean themselves and thus injest the poison. But you can't do that if you have children or animals.
Learn all you can about them, they feed at night or come out when it gets dark, unless they are disturbed or really hungry, then they will come out in the daylight for a feed.
The live for many months between feedings too, are a real problem.
Supposedly a doctors prescribtion for parasites also kills bedbugs too, but it's not proven effective for that yet.
You sound like you have a heavy infestation, I feel sorry for you. 😟
One hotel I know, they got painters in and caulked every crack in the place thus reducing places they can hide and sealing any inside to die.
They seem to like electronics for some reason, likely because it's a good place to hide and warm.