Pictures will help immensely. Time will tell if you made a mistake (it will probably be okay).

Thankyou, i thought i uploaded a picture sorry :’) these are the white edges i was talking about

It looks normal to me. Your plant will probably be ok. Be careful not to overwater.

I think what you're calling "white edges" is a feature... variegation. Snake plant roots are reddish in color, so you cut away all the healthy roots! :(

Sorry, that's not really even variegation for a Sans, it's the normal look for ordinary Snake plants, botanical name Sansevieria, likely the common variety called Trifasciata. The link I provided shows pix of what I mean, that it's a stripe on the edge, not really regarded among Sans growers as variegation.

Yes, their roots tend to be orange, perfectly normal & healthy. Roots to remove would be dry, brittle &/or crunchy (indicating the roots are dead).

See these roots, kind of orange, very healthy (from a recent rescue I did).

The goods news is these are tough, sturdy plants, so it should recover just fine. Be conservative in your watering & pls allow it time to recover.

There is also a Sansevieria forum here at Houzz, so you can do more reading.

PS: It's good you've got that Perlite in your mix; if you've got that well mixed & it's that much Perlite throughout, that should provide the good, fast drainage these plants require. So pls know you did get that part right.

Thankyou very much i hope it recovers fast