It looks to me like you may have missed out adding character background
A 'background' adds two extra proficiencies to your character, so missing that out would account for the shortfall you've currently got on Deception and Insight.
It's also very easy to miss this part of character creation on DnD Beyond - it's slightly hidden away under section four of character creation titled 'Description'.
The character that you are trying to create (if you're copying the pre-gen exactly) should have the 'Entertainer' background which grants proficiency in Acrobatics and Performance. The fact that these are not the skills you're missing leads me to think that you've already picked those two as part of either your class / racial proficiencies.
There are two ways you can fix this:
Either: As you've already picked Acrobatics and Performance elsewhere DnD Beyond will give you a free choice of proficiencies as part of your Entertainer background instead - so so can select Deception and Insight there.
Or: If you'd prefer, you can unselect Acrobatics and Performance in the place where you've already selected them and select Deception and Insight there instead - then, once applied, your Entertainer background should default back to giving you Acrobatics and Performance.
An alternative is that you've missed adding your racial proficiencies
As a half elf you're also granted two proficiencies from your race - if you've missed adding these proficiencies then simply go and select Insight and Deception there to fix your issue. I consider this the less probable solution as it's harder to miss, whereas the 'Description' section, where you find background selection, could be overlooked and assumed to only contain 'fluff', rather than mechanics.
Bard's also get three proficiencies as a class feature - but as you're missing two, rather than three proficiencies, it seems to me unlikely that you'll find your error there.