“Right,” said Fred.

is a line from a comic song.

If you can’t beat ’em join ’em is an expression about taking sides and making a stand.  It could be the basis for a lively debate.

Run with the pack.
Wolves and wild dogs work together.  Humans have the option of going with the majority or standing out from the crowd.

Some people are easily led.

This may cause them to stray from the path, go astray or be led astray.

Someone who is rebellious may go off the rails.  This is a metaphor from trains and trams, which can only follow specified routes.

Sidetrack is another expression from railways.  If someone is sidetracked they are distracted from their main purpose.

I can’t do right for doing wrong is a common complaint.  Even St Paul struggled with this human condition.  Romans 7:19

On the right lines usually means working towards a correct solution.

On the right track means travelling in the right direction.

In the right place at the right time might mean being able to avail oneself of an opportunity to help someone or to receive a blessing.

Abraham believed God and it was credited to him as righteousness.  Romans 4:3