Nintendo Switch goes off without a reason?

Days ago I have problems with my switch it goes all the time by itself it comes this battery empty sign and then she goes in stand by no matter at how much percent dendoch if I have the plug I'm not out of anyone a tip or advice what could it be or how to fix it?

(And no I can't send my switch to Nintendo that's terribly expensive)

How long have you got your switch? Could be a battery damage.
And then just the question would be if you have your switch for more than 2 years or not. Under 2 years you could have a chance for replacement or repair.

This can only be remedied if you trust yourself to replace the battery yourself. This works if you have the right spare parts ordered, appropriate tools and is not a grossmotoriker. But that does not mean that it must be a battery damage may also be due to the electronics, that there may be a malfunction. You can't really say that if you do not replace the battery and try it out or Nintendo.

Unfortunately I own it for 3 years now

And I can't change the battery unfortunately because my switch is so old old mukkern the screws ever wanted to do something else the screws can't stop turning were even in a load no chance

You CAN replace the battery, just is the question of whether you can do that and want.
It's best to first watch videos on Youtube (replace Nintendo Switch battery) and then decide whether that looks feasible or could break many filigree components.

Because a switch that runs with power is better than one that does not work.

3 years are not an age for screws.
You probably destroyed your console successfully then.

Part of it does not know how it happened with the screws but if even people do not do that extra, it does not look good.

Nevertheless, I think that the screws are suffering from age my switch 3 years everywhere mithingenommem am almost always at the gambling my switch is already ridden halfway around the world hehe