How to mate with two bishops please upload to me the best reply I'll be thankful!

See the 62nd move guys and tell me

@Arcade_Chess_123 maybe this can give a clue: lichess.org/practice/checkmates/piece-checkmates-ii/Rg2cMBZ6/17sHdtD6

2B+K

lichess.org/practice/checkmates/piece-checkmates-ii/Rg2cMBZ6/17sHdtD6

as for your game promoting is still the fastest way. i managed to m18 with 2B+K but im pretty sure u can save some moves there

The way you have your bishops set up on move 68 (right next to each other) is often a key to these things. Here the Black king cannot prevent the queen.

@Arcade_Chess_123
You missed simple mate in 2 thrice:
39. Nf5 (any move) 40. Ba3#
And: 51. Bf8+ Kh7 52. Rh5#
And: 59. Be5+ Kh6 60. Bf8#

And you gave up knight and rook for the Black bishop. Also, you could have ended the game early if you are good at endgame.
Though I know that one should know 2 bishop checkmate, but that doesn't come that often in games. In fact, statistics say that two bishop ending (no extra pieces) occur once every 6000 games. Also, the two bishop checkmate is at the learn section which others have shared it's link.

www.youtube.com/watch?v=ZN73l_b3h6Y
this vid helped me out a ton

@Akbar2thegreat thanks for mentioning to me, I'm a beginner after all!

See this one guys just played lol. Sf level 3 is very forgiving 😂

I'm black btw