1, dont build market, not until you need your vils to chop massive amount of wood, which is usually late fortress.
the reason is that ottoman's eco is the least depended on vils, and more on shipment, TP and fishing, because they have the slowest vil production. if you want to invest into eco and there is no more TP you can get, then build a church and get train time upgrades, they pay off much better than market.
2, skirm counters jan, so you will lose by sending jan to fight skirm. Get abus.
3, build outpost fight off raids, NOT jans. jans have 14 LOS, outpost has something like 28, you see a larger area so your vils and move away from danager early, outpose also provides garrison so he cant suicide calvary killing your vils, which is what some germans tend to do, if they kill 1 vil per uhlan, it is a good trade for them, it takes jan 7 hits to kill a uhlan, and uhlan 5 hits to kill a vil.