I am worried about my career and future

Hi, everyone, I'm going to be 30 years old this November 23rd. Until now, I only have 3 years of experience in IT world. I have experience in Oracle Cloud Technologies, Postman, SoapUI. I'm Oracle Cloud Consultant. Since past 3 years, I was working in Infosys as senior associate consultant. I was functional consultant there. So my job was to prepare solution design document, to prepare interface and data migration functional design documents. I was part of AMS support team , and I was part of testing team also. So now I have left Infosys and I have joined Deloitte USI. In Deloitte USI they are offering me 16 LPA, and if we include variable component also, then it will be 18.15 LPA. In the interview, they asked both functional and technical questions to me. I cleared Deloitte after the 4th interview, so in first three interview I was rejected. In last, 4th interview I was selected. Now I'm worried about their expectations from me? Will they ask me to work on technical things also? But I don't have much technical expertise. In Infosys, I was a functional consultant. I did minor configuration work in Oracle Cloud applications, I didn't do any major customization or major configuration work in Oracle Cloud Applications. Now I'm worried about their expectations? Will they ask me to work on technical things also? I'm worried about job security, I'm worried about work life balance also in Deloitte USI. So I'm worried about my future, I'm worried about my career. I'm going to be 30 plus years old. What do you guys suggest? I am thinking that I should not have left Infosys. In Infosys, I was very confident because I was working there since past 3 years, so I understood the business needs, I understood the technology. I was just a functional consultant, and I think I should not have left Infosys. I got too comfortable there. Now I'm thinking that in Deloitte USI there's job security risk. What if they are not satisfied with my work and they ask me to leave after 1 year?