1.When bad planet is seeing seventh house,there is no use of searching
for a high profile bride.
You have to compromise for so many things-like beauty,property,job.
2.Parents can also do penance as mentioned above in the answer.
But it is optional,because parents will be old and they cant do
such penance practices.
There are other methods of penance.
see in google–kumrao99 penance method.
You can get clarifications about penance(free of charge)