Construction financing despite a very bad Schufa score

I want to report again, Schufa Basisscore is at 93. However, the banking industry score is at the letter G. Does anyone know and can say whether I shouldn't even inquire at the bank because it doesn't make sense? The favorite will be [die deutsche Bank], they have the best conditions for us. How do they operate?

Basically, it would first be important to know in which region/city you are located and want to buy/build. There are partly regional banks that are not connected to Schufa and accordingly also finance despite a negative Schufa.

Although with your score I wouldn't really call it bad yet, it can be much worse up to no score at all.

If necessary, you just have to try with a bank that makes the correct Schufa request (credit condition). Definitely not with a standardized direct bank in that case.

Have you ever contacted [Schufa] and received an extract of entries and deletions? Based on this, you can see whether the basic data is correct.

Yes, always since the score has always been bad. Unfortunately, everything is correct.

How often have you moved in the past? That also affects the score. Speak from your own experience.

Since you know your score, you have probably received your annual "free" report, right? There is actually quite a lot in it!

Edit:
I looked at mine from January, I have 99.14%.
It includes my two health insurances, my checking account (1700€ overdraft), my mortgage, my life insurance, and everyone who has checked my score (electricity providers, credit inquiries, etc.).
Furthermore, my last address. (I've moved quite often)