Most people aren't hiring professionals to put up shelves lol. And there is no "how to deal with the wall". It's fundamentally weak. Best you can do is Rigifix M8 bolts which are rated to about 25kgf as I said.
Those seem to be for drywall. The strongest option is using resin to install some threaded rod, eg fis-v which is rated to 43kgf (shear load) in the lower of the two rated aircrete classes. That's because it spreads through the holes and therefore has a larger surface area of interface. The downside is that it's not removable.
Those seem to be for drywall. The strongest option is using resin to install some threaded rod, eg fis-v which is rated to 43kgf (shear load) in the lower of the two rated aircrete classes. That's because it spreads through the holes and therefore has a larger surface area of interface. The downside is that it's not removable.