Scaling MySQL Server for Handling High Volume Requests in a Multitenant Application

I am currently working on developing a multi-tenant application where I have implemented a backend that identifies the tenant from the header and connects to the appropriate database. However, I encountered an issue when attempting to create multiple databases and sending requests to the MySQL server. I consistently received an error indicating "too many connections." I am seeking guidance on how to configure my MySQL server to handle a large number of requests, as my backend receives a significant influx of requests simultaneously. The high volume of database creation and simultaneous requests ultimately leads to a crash of my SQL server.