What can I do with my NETGEAR Nighthawk M6 Pro (MR6450)?

Let me start with the fact that this is my second purchase of NetGear. Fortunately, I managed to return the 5th version within a month; it turned off within minutes. This device was purchased on June 29, 2023, and has not been used much since then due to the fact that it simply does not function as it should.

My problem:
I want to return this device. It doesn’t suit me at all; it doesn’t work, the functionality is removed, and it’s not worth the money. The return period has already passed because I was stupid and ordered it in advance for a test by another person, and the problems did not immediately appear.

A list of my problems:

1) If you use a device with a battery, then after two hours of using 5G with two connected phones, the device overheats and loses the network. To reconnect, you have to reboot and wait, which is extremely critical in my case—I conduct IRL streams. The device is inoperative.
2) If you use it from the network, then at the beginning it will reboot to enable the enhanced performance mode (this cannot be disabled), and after three hours of operation it will heat up again and the connection will become without access to the Internet (the network is not lost and still says 5G).
3) Not a single antenna (especially from NETGEAR) works with the device without affecting the signal quality in any way, and considering that this €1000 router catches the network not much better than a smartphone, this is critical.
4) Overheating: constant overheating in any case of use All you need from the router is to continuously and uninterruptedly distribute the Internet to your phone for lifestreaming with a bitrate of 6000 kb/s, which is not surprising; neither the device form factor nor the cooling system change from version to version.
5) Software updates have not been released for a long time; the device is simply left without support, although there are enough software and hardware problems.
6) The battery lasts for 4 hours of active use (5G–2–3 connected devices with Wi-Fi at 2.4 hertz; I lower the settings otherwise it overheats); it is impossible to recharge because, with the original adapter or with the power bank, everything overheats and does not charge during operation. If you insert the cable and remove the battery, the device will reboot, ruining the live broadcast.
7) In the new version, the function of sending SMS has simply been removed; they cannot be sent either from the device itself, from the application, or from the web interface. It was in version 5, but not anymore.
😎 Design, build quality, screen, cover, and battery that have not changed since the old version—nothing here is worth €1000.
9) Complete lack of technical support They do not answer either directly or in messages on the forum, as you can see by reading the section.

So what should we do? Try to return this device to NETGEAR based on the 12-month warranty to get the same one but less non-functional, and then try to exchange it too?
Exchange and try to resell to someone? Trade and just give up?