I rarely make any effort to replace swear words, and when I do, it’s a feeble attempt at best, using words such as heck, crap or ’‘frickin’’.
In French, there are also toned down versions of cuss words. Osti=estic, calisse=caline, tabarnak=tabarnouche and so forth.
I have always wanted to get into the habit of saying stuff like, zounds! fiddlesticks, curses or damnation lol, but it never seems to work.