resign
What to do vs the pirc?

Play the good moves then win that easy
my suggestion is best (for black that is)

Interesting taking over the centre, but maybe use database and learn the best opening choices and sometimes black gets stuck then

I play the austrian attack with white. 1. e4; d6 2.d4; Nf6 3. Nc3; g6 4. f4!. black usually plays on the queenside or in the center with c5. You play on the kingside or in the center.

Bg5 (the Byrne) is great and works well.
f4 (the Austrian) is another good line.
Another good line is the 150 Attack, like @PabloNajdorf mentioned. One additional good thing about the 150 attack is that it is really natural to play, and the ideas are not complicated. It is fun and also easy to understand.

This is my pet line vs the Pirc (or Modern). I play Be2, instead of f3, to save a tempo, and trade my bad bishop for a knight, then I play f3 with tempo vs black's light squared bishop. After that all the usual, attack down the h-file and try to checkmate. This tends to work well, if black castles early on the king side. Smart opponents postpone castling and play in the Hippo style.
This is my pet line vs the Pirc (or Modern). I play Be2, instead of f3, to save a tempo, and trade my bad bishop for a knight, then I play f3 with tempo vs black's light squared bishop. After that all the usual, attack down the h-file and try to checkmate. This tends to work well, if black castles early on the king side. Smart opponents postpone castling and play in the Hippo style.
Thats similar to the 150 attack

This is my pet line vs the Pirc (or Modern). I play Be2, instead of f3, to save a tempo, and trade my bad bishop for a knight, then I play f3 with tempo vs black's light squared bishop. After that all the usual, attack down the h-file and try to checkmate. This tends to work well, if black castles early on the king side. Smart opponents postpone castling and play in the Hippo style.
Thats similar to the 150 attack
Yes, it's almost the same. I started with 150 and it's a very good starting point, never had major troubles vs. the Pirc.
pirc