the miracle potion is hard to get because of the RNG thing do the only way is to cheat if you want to get many of those (or you can just cheat for the stats cookie more reliable than miracle potion) and the other way to level up is fighting and yeah is hard grind because you need to win but, if you win by battle you will decrease your like from mobs so try to win by seduction if you want to level up and increasing the mob like