we can't see your return. so this is a suggestion. are you sure everything was correct on the 2019 return? if so your choices are to increase withholding try 0 exemptions or pay estimated taxes.
the rules to avoid penalties (this just avoids penalties it does not mean you couldn't end up owing a substantial amount)
1) estimates and withholding must equal or exceed 90% of current year tax or
2) current year taxes less withholding is less than $1000 or
3) estimates and withholding equal 100% of 2019 tax (110% if 2019 adjusted gross income is more than $150,000)
