This is a core block and thus available by default in Gutenberg WordPress editor. No download required.
The WordPress Table Block in Gutenberg allows you to display any kind of tabulated data easily. This is the easiest way to add a table in a page or post. You can easily add & remove table rows and columns in this block.
Table Block Features
The table block toolbar has options to add or delete rows and columns. The toolbar also has options for alignment and formatting. The block sidebar settings have the option to choose table styles. You can also make the cells fixed equal width by enabling the fixed width option from the sidebar panel.
This is how the table looks on the frontend.
The table block added in the Gutenberg editor.
Table block settings.