Play 1. b4!

...but computer says Black has an advantage after 1. b4?

Yes, if you are playing against Stockfish or lc0, you have better chances to win if you use a better opening. Or have you?...

Sokolsky opening (1. b4) is a lot of fun, especially when most of the games you play are blitz games against random opponents. Especially when you're not a GM and, let's be honest, will never become one.

After all, Tartakower played 1. b4 against Reti and won. Are your average opponents better than Reti?

So play not the moves which give you best chances with perfect play against perfect opponent. Play moves which give you chances against non-perfect opponents! Enjoy the game!