What are the best ETL tools ?

Question

I need simple tool plz

Answer 1

There is no silver bullet, you have a data source and a data destination.

Anything can be used between. This is why people get hired. I would suggest you learn Python/SQL for ETL and not rely on 3rd party company's tools

BI and visualization part can be summed up as Power BI, Tableau, Qlik which are industry standards for visualizations