It sounds to me like you are wetting a lot, more than the capacity of your inserts. The trick to getting cloth diapers to work well is having the right amount and right types of absorbency, Microfiber will lose a lot of its capacity through compression (sitting and laying down) it soaks fast but doesn't hold it well when squashed, bamboo, cotton and hemp all hold better under compression but are slower to absorb so big heavy floods can leak out before they have time to soak it up.
Amount of Abosorbency.
I use a lot of These
inserts which are 4 layers of bamboo microfiber blend and about 20cm wide, 50cm long, blended inserts like this tend not to be as good as two separate inserts dedicated with each fibre type but these are not too bad. However one of these will only hold about 450 ml max and between about 320 and 400 after compression (depending on how much compression)
Knowing how much you go and how often can help figure out how many inserts you will need, you can test the inserts capacity by pouring over a known amount of water in a tray until it's saturated then hanging it up til it stops dripping, pour the excess back into your jug and deduct that from the original amount. Then put the insert back in the tray fold it in half and press on it evenly and firmly then deduct that amount of water to get compressed maximum.
I know for me (after spending several days peeing in a measuring jug) that if I just wee as soon as I need to and try to go every hour i tend to let out between 200 and 350 ml at a time which means two of these inserts will maybe last 3 small wettings over a space of 3 hours before risking leaks when sat. If I hold it until I really need to go I pee about 700-900 ml every 4 to 5 hours which means two of these inserts will be at max capacity after one wetting and be at risk of leaks from compression.
Types of Absorbency/Diaper.
A mix of inserts with different fibres can help, a thinner microfiber layer for fast acquisition and then thicker layers of bamboo or cotton to hold it all, it sounds like you have got this idea right so getting the right amount may help but if not then the next thing to look at is whether the Diaper type is right for you.
Unfortunately pocket diapers tend to be better for light to moderate use, either a few smaller wettings over a longer period or one or two moderate wettings and changed soon after. This is partly because the waterproof layer is sewn on to the inner liner to create the pocket, usually they are made from PUL and because of the way they are made they allow moisture to wick to the outside over time, especially if there is not enough absorbent layers so wee is able to run free under pressure.
If you are sitting once this moisture has wicked to the outside your clothing and the furniture will act almost like another absorbent layer and try to suck more out from inside the diaper through the patch where wicking has happened.
The easiest ways to prevent this are to use separate plastic/waterproof pants over the top, use more inserts to hold it better or to simply change more often so the inserts don't reach a point of over saturation.
The other choice is to use a different diaper type, prefolds, fitteds, or much thicker AIO's can provide better coverage and larger areas for many layers of padding which of course will hold more overall and also allow wee to be absorbed in different places when it gets pressed out by sitting. The downside to this of course is harder changing and less discretion as they are bigger, they can also be easily boosted by using the same inserts.
There are also different styles that use inserts, things like a gusseted waterproof cover (like the threaded armour) or a separate waterproof pouch (like a GDiaper) or an AI2 where the inserts are held in and surrounded by a waterproof fabric but the waterproofing itself is not sewn to any other liner or absorbent material.
There are many types and designs so if you figure out the amount of absorbent layers you will need for a given time period and the pockets are still not working for you then a different type of diaper may be better as they all fit a bit differently and are designed for different levels and types of wetting.
I hope some of this helps you as cloth can be so good when you get it right but does take a little more figuring out than disposables do to get the job done well.