Dont worry, I played 5 season, all 0.1-0.5%. Score are over 15,000. I prestige only 40-50 per days.
Daily (60), clan raid (40), diamond (50), tournament per week (4-600).., not including buy titan chest, Basically one season about 5000.
As I know you are low stage less 30K, 5 min one time prestige is possible without any cheat, if you know how to play this game.
But, high stage even 90% clan XP, you should play over 10K per prestige, too much score is not reasonable.
I hate season bar in chan, people will see how many score you have. This season is no bar, try to prestige much more.
People report you normally in tournament, if you want to champion to jump too much stage with low profile ( low pet, low weapon, low scope ).
But, actually game have auto investigate teapot or not, by man to check not usually.