That's tough. I think you should save up though and pass on the banner. The upcoming banners such as the legendary banner and the special heroes banner will have characters who won't show up for a long time/ever, so I would prioritize them. Besides, I'm not sure 50 orbs would definitely net you a 5 star.
If you never want above a 3%, get ready to cry more than a hormonal pre-teen. It rarely works that way.
As for the banner, I’d say weigh your priorities. If it will make your units notably better, take a chance. If not, walk away.
In my case, I am not very keen on legendary banners, so I am not going to worry about it.
Well, in my experience and religion(Islam), blindly following impatience is never the good thing. Islam states that what you will obtain in life is written down before you are born, the only part you can change is how and when you will get it. For example, there are $10,000 sitting on a table I front of you that belong to someone else. You took them, and the next day you get fired from your job, which the paycheck you would have got would be 10K. You don't take them, you keep your job and get the 10K. See what I mean? Don't waste your orbs, you'll get Ike or Takumi someday.
I know, he is great, even with -Atk. It's not like I'd fodder him soon.
Why does green have the best chance btw? I know it has the smallest 5* pool, but doesn't this only affect the individual ercentage of non-focus green 5*s? I'd be ok with any one of the focus, not only Hector.
Correct me if I'm wrong, but I believe the gacha rolls for individual units first, with the focus holding a larger chance of being rolled. It's kind of like drawing names from a hat, where some units have more slips of paper with their names on it. Then, the gacha rolls the rarity of the unit, and then displays the corresponding colored orb for said unit.
Or, does the gacha roll the rarity of a unit then the color? I'm really not sure.
Ye idk about the math either....but its all but common knowledge that green is the best color to pull from. It has to do with the fact that their summoning pool isnt as diluted as the other ones.
So although getting a green orb on a summon is rarer, it works out that getting the focus unit you want is more likely (plus the pity breakers are better)
Pokemon GO
Fire Emblem Heroes
Fate Grand Order
Dragonball Legends
Dragalia Lost
IV Calc
Heroes