Thank you for putting the how-tos together.  Without those the video wouldn't have happened.  It was my first time dealing with Ether and it turned out to be a learning experience that at least ended well 🤯.  Here is a decent explanation of gas if anyone is interested.
https://myetherwallet.github.io/knowledge-base/transactions/transaction-failed-out-of-gas.html
Thing to remember is gas limit is just that, a "limit".  You only pay for what is used.   If it is an important transaction to you,  go ahead an put a little buffer in your gas limit.  It is far better off than running out of gas.