do i need to pay for anything in this situation : i m making mini games to raise money and cant afford unity pro or plus(don't think its worth it)for my original idea/game.i am also thinking about using unity ads(is that free to use as well).
If your company currently makes more than $100k in annual gross revenues or has raised funds in excess of $100k, you are not permitted to use Unity Personal, for prototyping or otherwise, as defined in our EULA Agreement. You may use Unity Plus for up to $200k in annual gross revenues, or Unity Pro with an unlimited revenue or fundraising capacity.
So yes, you can release your game made with the free Unity Personal Edition. You only need to upgrade to the next version after you made more than $100,000.