A person. Corrected me that two past tense can not come together in single sentence “Didn’t” “went” (GrammarProsHelpToExplain)

The person who told you that is correct, at least in the case you're describing ("I didn't went" is definitely wrong). There might be exceptions, but none spring to mind for me right now. Google AI is terrible and you should never take anything it says seriously.

I wouldn't recommend trying to use two past-tense in the same sentence. There may be examples that do so well, but none come to mind.

I **had believed** you were right for a little while.  ;)

We went on a road trip in cars and bikes. We all *drove* and *rode* from Melbourne to Sydney. Don't use AI to try and learn anything, including Google's search summary AI.

It should be "today was my chest day, [but] I didn't go because of you [since] I thought you *were* going to come tomorrow" AI is a liar and not your friend 

STOP READING AI OVERVIEW IT'S SHIT

AI is misunderstanding you, assuming you meant two different actions. "I ate lunch and watched YouTube afterwards." that's two past tenses in the same sentence. But when it comes to using "did", it's always followed by the base verb. Instead of asking AI such a general question, you should've just asked if "didn't went" was grammatical.

You shouldn't trust chatbots to give you information, they tend to make things up

The sentence you gave is completely incorrect. The other commentors have done a good job of explaining why.

Generally speaking, you don't use two conjugated verbs in the same clause. You can certainly use two past tense verbs in different clauses within the same sentence. For example, you could say "I did not eat, because I had no time" In this sentence, both "did" and "had" are in past tense, but it makes sense because they're in different clauses. Sidenote: the "I" as a pronoun in English is always capitalized. I apologize if this is just a typing error, but I have seen some non-native speakers who did not know that they should always capitalize the I in that context.

“Didn’t went” is not grammatically correct in any form. You’re misinterpreting the way you can use two past tense words in a sentence. A proper sentence example would be “I had gone to the hospital last Thursday afternoon” it’s a bit clunky but it’s grammatically correct. A less clunky version of the example sentence would be “I went to the hospital last Thursday afternoon”

"Didn't went" is 100% wrong. ("Didn't" is an auxiliary verb) The prompt that you put into LLM does not describe the sentence that you used. It describes a sentence such as: "I went to the supermarket and bought some milk." This contains 2 past tense verbs and is 100% correct.

was / were + third form could be, did no

Would you really trust a shitty program that can't even think?

Run = do + run Ran = did + run Basically, Present = do + present (V1) Past = did + present (V1) This is how I was taught in school, but most people don't use "do" with present tense verbs unless they want to emphasize the action. The same goes for "did"—it's mostly used for emphasis or in negative/yes-no questions (e.g., "didn't" or "did you...?"). In the case of "did," it already indicates the past tense, so you shouldn't use the past tense verb form again. It's just a rule of thumb—once you get used to it, you'll never second-guess things like that.

Yeah "didnt go" Would be correct you can use those 2 in a sentence though "because you didnt go I went shopping" you would also use go not gone

The AI is correct, but it is interpreting your question differently than you are intending it. You can of course use multiple past tense verbs in a sentence, e.g. "I woke up and made breakfast". But that's not what you mean with your question. You want to know if it's possible to put two past tense conjugations of a verb right next to each other, which you obviously can't.

I hate how much these AIs are pushed in our faces. Obviously it's wrong. Just don't read it, and nothing of value will be lost.

When forming the simple past tense with an auxiliary verb (do), only the auxiliary verb is in the past tense. The main verb keeps its infinitive form. So your example sentence is grammatically incorrect. "I didn't go because of you" would be correct. You can, of course, have two past tense verbs in the same sentence, but they must be in separate clauses. Example: I didn't go to the gym today because I already went yesterday.

You can use two past tense verbs in a single sentence, depending on structure. E.g. I *spent* too much time reading Reddit and *lost* all hope in humanity. But your example is wrong because "didn't go" is a single verb phrase, and in a verb phrase, you conjugate the auxiliary verb ("do" / "did" / "will") but not the main verb.