Not easily so far as I can see. One thing you could do though would be to go through your expenses from the year, and mark them with something unique in the description that would then readily identify them as a tax write off expense.
Then, utilizing the Search feature on the bottom left column, put in the identifier, and only the transactions you'd marked would show up in the report. That report can then also be exported as a CSV file (top right hand corner).
For example, if I added (ty2021) ... including the ( ), just to make it very specific, standing for "tax year 2021" ... putting (ty2021) will yield only those transactions in the search report.
I'm sure it's not ideal to go through the whole year to do the marking, but it IS something. And if this were something you chose to do going forward, it of course would be prudent to put that marker on there every time you input an expense that you want to be gathered for a tax reporting down the line.
Hope this helps.
Cheers,
~Nate