While this is scary as fuck, the solution isn't necessarily just more patriot missile defense, the solution is to punch them back in the face hard enough that they have bigger problems.
You can't stop ballistic missile attacks past a certain point, the best defense Ukraine has is exactly what it is doing, broadly striking war infrastructure deep in Russia.
That being said as a USian I am disgusted Israel got such a massive amount of patriot systems and yet my government has slow walked providing the same systems to Ukraine.