Microlimits beginner - trouble hands

Hello everyone.
Just started putting some effort into this game after a few years of amateur home-games with friends (once a month or so) and a bit of online.

Right now, my goal is to grind 30k hands at the 0.02 - 0.05 6-handed games and see where I am at the end.
Not trying anything fancy, mostly because of my lack of experience but also because fancy play isn't exactly productive at these levels.

One of the biggest leaks I noticed in the first 9k hands is my apparent inability to play unpaired picture cards, wich tend to put me in all sort of troubles.

While I do realize overplaying these hands is amongst the biggest dangers for new players, I also realize most of them are very strong starting hands.

To be more specific, I'm having trouble with these hands when playing on donk-heavy tables.
I mean 46/10, 72/1 (after 136 hands, no kidding), this kind of people.
Today I found myself in a table with literally no one below 45% VPIP, most of them with <10% PFR.
Not huge sample sizes, but this kind of players is obvious enough.

So, as learned from the good folks on these boards, I tightened up, maximized my monsters and tried to exploit the serial limpers.

But what to do with all these unpaired picture cards?
KQo, KJo and QJo, I don't even bother from early position.
But stuff like KQs from the button?
It's not rare to get two limpers before me and 2-3 flat calls after my 5x raise.

Then I find myself in a 3, 4 or even 5-way pot and pretty much everything seems scary, even with the top pair.
Often everyone checks to me and I keep getting calls on my 2/3 - 3/4 bets with the top pair.
What are they doing? Chasing draws with wrong odds? Did they catch two pairs with their beloved Kx?


Basically I'm looking for basic advice to play these hands in very loose/passive tables.
And sorry about the mistakes. English not my first language.