Are defensive tactics the best ones?

[LeManiaque]

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Just used 4141 defensive/flanks/long/on; low/hard/zonal/off ; down arrows DCx2; in a great 0-1 win.
451v (112%) against 4141 (99%)
Both managers present, +5% possession for me (away)
Red card my ST at 30'. Switch to 413w1, with ST dropping from 115 to 94q veteran, same tactics.
End result 0-1, more shots and SoT