Who is relatively knowledgeable about tax returns and has a tip?

Here's the thing: I'm not an expert when it comes to taxes, but I've just filed my second one as an employee.

My problem is: As a tradesman, it's usually worth deducting the costs of additional meal expenses. When I filled out the form, I entered 190 days of additional meal expenses. Now I received a certificate from my employer (after submitting it, of course) that shows 161 days, a difference of 29 days.

Now I won't go to jail for this, that's clear, but if the tax office demands the evidence, I could face something (like a fine or something similar).

I am grateful for helpful answers