The only way, as far as I know, is double spending the same input. If one of the transactions get included in a block, the other one can never be included anymore.

Why bother trying this though?

Can you tell us why do you want to do that? You will just lose your BTC by making such transaction...

Double-spending is what you're referring to; one transaction gets confirmed while the other remains unconfirmed until the mempool deletes it after 2 weeks (which, in earlier days, were quite harsh given the 72-hr time period). It's not really impossible, you just need to know how to manipulate the core client well enough to achieve what you want to do. It's also a non-permanent transaction and only a few would know about it, considering that not everyone would have the interest to look it up.

I think all transactions are preferably go into confirmation before we processed what transaction we have, I don't know about hidden transaction complete or success without confirmation.

Why do you need to do it for ? it's clearly said that impossible transaction so there is no profit in there tho.  Well at least those transaction mean anything to do could be mak sense, to be honest I have never heard about it because it just waste my time if I do it I think.

Maybe he wants to learn and recognize him, so he can understand better if there is a problem when making a transaction, we must have a little understanding of him.

I think that you just need to specify the cost of the transaction which will be very low, for example, one cent and not one miner will process it until the cost of the transaction fluctuates around $ 3 on average

Usually this is a tricky business and it can't be done without taking any custom developer mode which is not a recommended way. And the risk of losing money is higher, actually almost confirmed in this case. Also, even if the transaction is possible, you might get ditched too cause it can't be proved that it's your money.

I think double spending the same input is the only way. You need to use the original Bitcoin core,since there you can choose the commission. You just need to know how to manipulate the core client well enough to achieve what you want to do.

there are two different things that you should not confuse with each other.
a transaction that never confirms or a transaction that is invalid.

you can create a transaction that MAY never confirm for example by including some nonstandard output in it that bitcoin core nodes reject by default. or you can pay such a low fee that miners never pick it up or a lot of other ways.

however an invalid transaction that is really "impossible" is literary never going to be confirmed because it is as the name suggests "invalid". you can create an invalid transaction but you will be the only one who holds it because everyone else (the nodes) will reject it.