And not testifying is super common and what happens in the MAJORITY of cases.
for
criminal cases this is true. but not civil cases.
in criminal cases you're almost expected not to testify. it's probably the best option and even your own attorneys will advise against testifying.
unlike whatever nonsense you'll see in hollywood movies or reality tv, it's very rare to see a defendant take the stand during a criminal trial. nobody really ever does that.
taking the fifth is ultimately the best option in any criminal trial, even if you're innocent. you let your attorneys provide your defense. you have the right to take the fifth and in a criminal case the jury is not allowed to hold that against you.
the only reason why defendants ever testify in criminal trials is when the outcome of their case relies on their testimony, and their legal team advises them to do so after they have already decided that all of the other evidence that was presented in trial was way too damning for them to be able to refute and they are expecting a conviction UNLESS the defendant testifies. and yet most of the times the defendant will still take the fifth, because when it has already reached that point whatever the defendant has to say isn't really going to mean shit because the evidence is already stacked against them.
in criminal cases the state has to prove your guilt. they gather their evidence and witnesses and they present it at trial. they could give a fuck less about whether or not you choose to take the fifth or what you have to say for yourself during trial. they're not even expecting you to testify, but rest assured that they would love nothing more than to get you up on that stand and ask you some questions, because the state has already believed that they have all of the evidence needed to convict you, and that's why they chose to indict and prosecute you in the first place. whatever you have to say for yourself after the fact is likely going to be moot, and you'll only be digging yourself into a deeper hole if you get up on that witness stand and you can't paint a good enough picture that will hold up to cross examination and rebuttal.
the best thing to do during any criminal matter is to just take the fifth from day one. from the moment you get charged until after the verdict gets read you keep your mouth shut and let your attorneys represent you and do all of the work for all parts in-between. don't talk to nobody about the case, don't speak to any law enforcement or prosecutors without your attorney present. don't go on social media and then start talking about anything at all related to your charges until your case is resolved. by doing so you're only hurting yourself.
but civil disputes are a whole different ballgame. sure you don't have to testify if you don't want to. you don't even have to show up to court. that's your own perogative, but unlike in a criminal court, the judge and jurors can and will hold that against you. and in a he-said she-said civil dispute where the judge or jury needs to weigh out which party is more believable and pick a side, if you don't even care to show up and tell your side of the story then best of luck to you i guess. i don't know of very many cases that were won in this fashion, but maybe it happened sometime.