What do you mean the Gods assured you they would help? Are you sure you didnt just make an assumption on the matter? As for why they didn't help I am going to be totally honest, I personally don't think the Gods are overly concerned with playing matchmaker outside of truly exceptional circumstances, perhaps if a Guardian or above asked they would but some things the Gods expect us to handle on our own and romance is one of them, they have already given us through the ToZ plenty of tools on our own to aid us in this.
As for your offer, you have to understand the Rituals benefit you more than they benefit the Gods, the Rituals themselves are a gift the Gods have given through HPZM, promising to do the Rituals is kind of like promising that you will let them give you an interest free loan, its not them who are receiving a benefit its you, also its kind of considered the bare minimum that a Zevist should do in order to be a Zevist.
Next time try instead asking just one God in particular, do their Ritual but this time ask them to help you develop into the sort of man that can find a happy and healthy relationship, the Gods arent very interested in just giving us stuff we want, they are however very interested in teaching us how to get the stuff we want, they only straight up give things in very exceptional circumstances.
And lastly the Gods prize liberty and free will very highly, if a person is simply not interested in you the Gods will not change that, its not their way and it goes against their desires to force or compel the will of others for such purposes, this is particularly true of women and matters of sexuality.
Also remember these are almost unfathomable Deities of Ancient wisdom and extreme power, they aren't really beings you barter with, you can make an offering and ask for something in return but you cannot make demands of them or expect them to agree to something, the offering you give is frankly speaking to be expected of you, you asking for something in return isnt a deal, its a request and they can and will say no to certain requests for any number of reasons.