Behavioral questions all sound different and all want the same thing: evidence that you have done something like this before.
Use a four-beat structure. Situation in one sentence. What you were responsible for. What you actually did, step by step. What changed as a result. Ninety seconds total. If the interviewer wants more, they will ask.
Prepare six stories, not twenty. One conflict, one failure, one deadline, one time you led without authority, one time you changed your mind, one thing you are proud of. Almost every question maps to one of them.
Say numbers out loud. "We shipped two weeks early" is stronger than "it went well".
When you are asked about a weakness, name a real one and the specific thing you now do about it. Interviewers are not looking for perfection, they are looking for self-awareness.
Always ask three questions back: what does success look like in the first six months, what makes work hard here that an outsider would not guess, and how does this team decide priorities. The answers tell you more than any careers page.