The landlord just CANT terminate the lease, ever. (Unless he is going to live in the place herself or the tenant stopped paying. And even then, it takes a long time to get a tenant out.
It works just fine.
Can just lie. My last landlord said he was moving back in because of family circumstances. As soon as he kicked me out he renovated it and put it up for sale.
Didn’t get an offer he was happy with and was asking me if I wanted to move back in 12 months later.
Tenant said "he moves back, of family"
But that never happened, just rented out to the next person for a higher rent.
I'll give you it works better than some other places because the rights are balanced.
But 3 month termination notices are just an anachronism. German "bureaucracy" still think contracts are forever when they're getting shorter with time.
Yes, I'm giving you the 3 months notice when you could terminate the lease, let's say, with 1 month then have a queue of 10 people ready to rent it again (were you not petty)
I'd wager that it's really up to you to familiarize yourself with local laws and customs.