Hi Pranav,
My first suggestion would be to ask yourself (and/or your stakeholders) if it's absolutely required to show that many columns in a single datagrid. In most use cases you would only show the key identifiers and/or columns that require a filter, and move all the other attributes to a detail page if the user wants to see more.
However, to solve your problem: most likely the space where you normally drop the filter is too narrow because of all the columns. There is a property on page/snippet level called 'canvas width', which allows you to expand the horizontal space when viewing in structure mode in Studio Pro. Try changing this setting to a higher number, as by default it will be 800px
Hope this helps!
Cheers, Joost