DSA Hell

I am a JAVA backend dev, currently in TCS with 5.5 yrs of exp. I want to switch to a Product now. My dev skills are good. I have worked in few projects. With this many years of exp, the expectations are too high now, System Design, Kafka, Jenkins, Docker and DSA on top of that. I don't know how to start, once I start preparing DSA I feel like I am missing on reading system design and other stuff. Also, I don't feel confident about my DSA skills. Are there any devs here who were very bad in DSA but are very confident now. Please share your experiences in comments. Since I already have so many years of exp, this is my last chance to switch to a good product company. Please guide.