I agree with poppa. It is very hard to daven when you feel angry at Hashem. It is better to daven the minimum, maybe a shema and shemone esrei once a day. It is clear that even when your bitachon is weaker, your emunah stays very strong.
So I think that at least when you are davening shemoneh esrei you can have in mind that you are not doing it for yourself, but despite your anger with Hashem, you are davening for the rest of the klal that needs your tefilos. In this way, you can still daven until you are able to work past your negative feelings.
All that aside. I suggest you look for anything [kosher] at all you can do, that will give you sipuk hanefesh and simchas hachaim. This should be your overriding concern. Someone like you who is able to maintain such a strong emunah even in a difficult time, will be able to fly to the stars once you can find simcha. The yetzer hara clearly agrees with me on that and is doing all he can to prevent it. You must do all you can to fight him on this.