What is the expected salary when switching?

Current CTC around 8 - 9L, with 4YOE in Java, Spring Boot, Openliberty and Wicket. Basic exposure in Angular and React js. Learning AWS and Spring AI currently in Udemy.

How much I can expect in switch. What are the chamces with getting job with this profile with 90 days notice period. Can I wait till getting a offer before resign or rrsign start looking gor offers? Suggest me.