Fish games of pragmatic is very generous on giving free spin for manual spin especially if you avail the increase bonus chance for a little bit bump on spin price. I’m not familiar with that big bonanza because I frequently play the secret of the golden lake variation due to its 2 type of bonus.
Congratulations on your win.
Most of the time, I use manual spin, I mean I use automatic spins so I don't have to click one by one. Usually, I only use 50 or 100 auto spins and just wait for the result. I don't minds if I lose my money using that way because the lose itself is not too big for me, especially I only use smallest bet.
I haven't won a slot game from the Pragmatic provider for a long time and this is the latest win I can get. Although that is just $5 but it is enough for me and I can accept that wins.
I hope you can wins more than me on your favorite slot games. But always limits your bet so you don't lose much money. Stay healthy and safe.