a divorce is always the ruin with a house, unless only 1 person is registered or you separate on good terms. this can be completely impossible to fully secure in a financing. as long as 1 person could pay for the house alone, they can also take over the house completely in the first years (if there was no large equity involved) without paying out the other (because there is nothing to pay out yet). however, a reasonable cooperation is absolutely necessary for this. in case of a sale, ruin is pre-programmed, unless the house has increased in value extremely during that time.
saving for a house is pointless with a household income of 3000. if you save 500€ per month, you have covered the incidental costs in 3 years. unfortunately, by then the price of the property has increased by more than 18,000€ due to the new energy saving regulation, general price increases, etc... that is actually the nice thing about a house financing: the financing amount remains the same for the entire fixed interest period. what is still a lot today (e.g. 1200€ with 3000€), might be a joke in 10 years. I also see it somewhat like rent, only that it does not increase until the end of the fixed interest period. if you plan and set this intelligently, you have many years of peace and in the end maybe nothing left to pay or only a manageable amount. financing 50,000 in 15-20 years for a 300,000€ house is really no longer a feat.