Feeling depressed over other people's wealth and comforts

Q: I am married. We are financially not fantastic with both of us working with 3 kids. We live with my parents. We bought an investment and sold it off but covid came and we could not repurchase a home. Now things are expensive, it's hard to get by even on two incomes. Family and friends all around me seem to be financially killing it, bought homes, have good jobs, can afford to send kids to good schools.

I feel resentment for ever getting married, listening to my parents and having kids. I feel anger towards my husband for not being financially settled and mapping out and striving for a better financially secure future. How can I get rid of these thoughts and feelings. I try being grateful and just working hard and praying but around me someone or another will mention their recent good job or house purchase or financial gains and I will go back to the bad thoughts.

Gifting a Kruger coin

Q: Is it permissible to purchase and keep or give as hadiya etc. a Kruger coin, as it contains a picture of a Springbok. (It can be kept in a casing which covers the moorat).

Also, it is not possible to carve out the tasweer from the coin. Many people give Kruger coins as Mahr etc. What would be Mufti sahebs advise on this. 

Gap of 3 saffs between two saffs

Q: If in congregational prayers and Jumu'ah and Eidain, the Imam is in the indoor hall of the masjid and saffs are made behind him and the door of the hall is closed but not locked and saffs are also made outside, but there is a distance of 3 saffs between the last indoor saff and the first outdoor saff, are the congregational prayers or Jumu'ah or Eidain prayers valid?