Riester as real estate financing

Hello,
I have a Riester contract (fund savings) with about 35,000 euros, which I have been saving for about 10 years, and I am considering using it for an upcoming house purchase.
Should I do this?
What advantages and disadvantages could this have?

This is what your insurance tells you

Maybe this helps:

We did that too. Advantage. It is own money, which I do not have to borrow. Disadvantage. The tax. The deferred one. And possibly loss of allowances. The approach was to withdraw only as much as to keep the contract intact. We withdrew 18 and left seven. The withdrawn 18 will be taxed at the start of the pension payout. The pension payout is in 24 months for me. At the time of withdrawal, it was about 51 months. Thus, the taxation despite interest effect is not significant. If you are very young, it looks different. On the other hand, you save the interest on loans. The seven are not just standing; I continue to contribute to the contract. Also in stocks, like you.

Wrong link above...this one should be it: https://www.hausbau-forum.de/threads/riesterguthaben-entnehmen-sinnvoll.32092/