Hello, and welcome to the Forum!
Glad to hear you have many questions. This means that you are getting into the details.
1. It is important to find the balance of acceptance criteria for your Historical data. The number of bar matters here. If you have a small number of bars and you set strict acceptance criteria, you will not see any strategies in the collection.
Yes, these are criteria where I follow and do some changes if it is needed.
There is a Topic in the Forum about the Acceptance criteria, and many traders shared their way.
Simply, start with any acceptance criteria that you find logical, and you will see if you need to stricter or not.
It is better to have more strategies in the collection from where you can filter again.
2. When I generate strategies, I want to have at least 10 strategies that passed all the criteria and robustness tools.
Depends on the asset and what the plan is for the trading, sometimes I go for above 30 or 40. Just leave it longer or loosen the criteria.