Why haven't I received my refund direct deposit

Accepted just means received for processing.   Approved is a later step, and it's only been 19 days for you.  (Many taxpayers have been waiting 6 weeks or more.)  The IRS is seriously backlogged due to all the extra stimulus filings, as well as a few million unprocessed 2019 returns left over from the COVID shutdown.  In addition, the Where's My Refund site has been erratic and unreliable.  But if TT told you the IRS Accepted your filing for processing, then the government has it.  Contacting the IRS will not help, and it has implored taxpayers not to call.  Lots of other folks are still waiting, so please continue to be patient.  Also see:

The IRS is under serious stress — what does that mean for your refund? (msn.com)

What led to IRS backlog: ‘Thin workforce,’ new pandemic relief programs | Federal News Network