Laravel load reduction for the large data insertion in database

As I am newbie to Laravel, please help me find the way from my issue that I have huge data of records from first database which is being used and processed within with some filters then stored into 4 different tables into second database.

There will be data in large amount so how should I manage to insert the data into second database by reducing the load time ?

Here , bulk insertion will not solve the purpose as insertion id is used to insert new records relative to main table of second database.

(Note:There are multiple condition applied to manipulate the data.)

Thanks in Advance.

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