Germans vs China
Nice early market! However I wouldn't invest in the age II upgrades when FF'ing, because the vill count is a bit low for them to have a good cost/effect ratio and because those res could be better used to age up faster (125c from steel traps) and to prevent housing, which is a huge problem in the german FF.
Since you already had a barracks to get skirms, going for 9 uhlans as first card in age 3 could have been more effective than 8 skirm + 3 uhlans.
You overcommitted a bit into destroying that wonder. Rather than fighting in that choke point, just use the uhlans for raiding until you get either falconets or veteran uhlans so that they don't die so much to ckn + tc fire.
Landsknecht are a decent unit but require a bit of micro, ckn are quite efficient at killing them but if you use cover mode they can tank very well and also be a good siege unit.
Lands + black riders was definitely asking for falconets
Try not to let the game drag for too long without having a serious offensive tool otherwise China will reach IV and get old han reforms which is very very hard to overcome.
You should have saved those black riders for a different opportunity, they suck vs ranged infantry + hand infantry but they shine against cav and musk-like units.
Be careful with skirms vs ckn, at range it's fine because of 20 range vs 16 but if you keep close to ckn you start losing it costwise because ckn don't cost gold.
When sieging, try to stay away from tc fire by sieging farther buildings. Also note that mine were upgraded so they were dealing 135 dmg. Keep the skirms + hand inf sieging and raid with the uhlans. At minute 26 you could have easily won!
Amazing eco!
Don't throw skirms alone (4 landsknecht are too few) at the enemy base, they die very quickly to cav and they can't properly siege.
Lots of unspent resources. I felt that you were willing to go age IV for like 10 mins but you never decided to, which meant you never really focused on massing a big army either.
And then the old han reforms came. With Counter Infantry Rifling, Uhlans and falcs you'd have won easily. You had way better eco and plenty of time to pull it.
gg! You had a nice FF, good economy and great pressure. Two falconets at the right timing and you'd have had it.