Get Cloud Watch logs from differnet lambda functions or applications

Question

I want to fetch Cloud watch logs for different lambda fucntions and trace for a pertucular string just like insights becasue we have some set of lambda functions and applications which need to run for a perticular job. Many time some of the services stop runnig due to some issues so i want to trace them with perticulart string and get error report where it got errored.

Eg : Lambda1 will call Lambda2 and Lambda2 will add entry in DynamoDB. Now i want to create a lambda function which will trace lambda 1 and lambda 2 give me report if both lambdas run succesfully for a perticular JOBID.

So far i have tryed to use AWS Cloud watch as a trigger but it is giving log only for 1 perticular function but not for all functions.