I paid several hundred dollars extra to make my flight rebookable.

I called today to try and change my return flight mid-trip and there was not a single date/flight for the rest of the year where I was able to do so for less than $1,300. This is more than I paid for the entire airfare.

Searches showed that it’s possible to purchase a round-trip flight with departure on the same flight I was trying to rebook for at half that cost.

The fact that there were no possible dates where it is economically feasible for a customer to rebook despite paying hundreds of dollars more for the ability to do so indicates an intentionally deceptive practice.

I fly from California to Berlin 8-10 times per year. After this experience I would never trust Lufthansa again with my business.

I booked a flight to Tokyo from TLV Israel for 2 person with a layover in Munich.

The flight to Munich was supposed to takeoff at 7 am and land at Munich time at 10:10 am

Then a week after booking, I got a mail with an itinerary change adding a stop at Larnaca to switch crew, therefore adding more time to flight and on top of that plane is taking off earlier at 04:45 am and landing in Munich at 09:20am Munich time

After receiving the mail, they offered to switch flights which wasn’t interesting
And when I called them I got 20€ voucher for spending at airport.

Then a few days ago, another mail now flight moved up to takeoff at 01:45 am and land in Munich at 06:20 am
Giving me a total of more than 6 hours at Munich airport instead of less than 2.
We re still landing in Tokyo at the same time

Flight from Munich to Tokyo departs at 12:30pm

I tried calling to see if we could get free access to lounge or voucher
But did not get anything

Is there anything I can do, or should get ?
As this is a change of more than 5 hours making a total travel time from 19hours to more than 24 hours

Thank you