Oh man....
Go Sturmpanther, go!
There you go
First of all you are kind of new --> less experience in coh2 so ist clear, that you get in trouble. You have all in all 38 Games with OKW. Maybe you gonna try to play some USA and Soviet game as well. It helps to understand the game. Also you play random. Means mostly you have to carry the game.
Beside this all, I will give you now a full replay analyse. I hope I don’t strike you down with this
1. Build a Kübelwagen, if you can micro it! You can build this untis in almost every map.
2. Don't cap the first points near your base with your Sturmpio. Attack big points / attack enemies untis.
3. Your first Volks is standing afk in the cover. Use this unit to cap the middle Vp. While you are capping it, you can build sandback with this untis. Use this ability!
4. Min 2.40 You want to help in the south with yoru Sturmpio. --> Flank the Wickers-Mg and don't run frontal in it.
5. Tbh, I would not play North, middle and South with your units. It cost you a lot of microskill.
6. Min 5.10 You have 1200 Manpower!!! You built only 2 Volks in 5 min. No Go!
7. Min 7.42 You have a Luchs out. This unit is very late at the field. At this time enemies can have allready Stuart, AEC or paks on the field.
8. Min 9 your luch is death, because of the called reason from point 7. Your luchs deals only! 173 damage.
9. Built Sturmoffizier.He buffs your units alot, also from your teammates.
10.Min 10,19 you have your first anittank unit out. Thats way too late! Build earlier a raketenwerfer ( around min 5)
11. You lost a lot of manpower vs T70 because of Reason 10.
12. Your units need heal! A) Build it self B) ask your teamates for it. If you don't heal your troups, they will die faster --> a lot of manpower cost for your.
13. Min 18 you have 1500 manpower and 340 fuel! Do something! No Go!
14. Don't get a 2 and 3 Puma in lategame, when you lost your Puma allready. Tech up for Heal, T4-Flak etc
15. Take care, you only blobs. You click at all your units and then one right click on enemies. Mg, Arty, democharges can rape you easy!
16. Upgrade the engine from the Jagdtiger
17. Middle Vp, you lose almost your whole inf vs 2 Brit mortars
18. After 5 min afk, you use your Stuka the first time!
19. Min 31,30 Your Jagdtiger in the middle Vp. If you want to drive back--> use R/T for backdrive. You just clicked back so the JT turns around and showed his back to the enemies. No Go!
20. Min 31. Now you built T4-Flak in your base. A) thats late. B) You could put it at your own fuel for example. Also in this game I think to go now for T4 was not needed.
21. Min 34/35. Your first try to attack the south, where the 2 Brit mortars are. Good idea, but you only attacked with your JasdgtpanzerIv alone. Use Inf and Tanks together. Your JasdgtpanzerIv died almost alone there.
Short version:
Use your manpower and fuel!
Attack together with inf and tanks
Use drive back
Attack earlier brit mortar in the south with your whole army. With puma+ Stuka and Inf. Or Build ISG!
Also in the lategame the Jagdtiger could easy kill the mortarpits.
Hope I could help you