What if table columns cannot fit on webpage?

If I've 12 - 14 columns in a table to show on a page but there's not enough space to show all columns (let's say, there's only enough space to show 7 columns of the table), what is the solution for this?

I can make the page scroll horizontally but it's ugly and the last resort. Shrinking the font size of the table data only has rooms for 1 - 2 more columns at best.