That's such superficial look at things. Juventus didn't loose finals because they weren't more offensive, they lost because they weren't good enough. If anything we were too offensive vs Barcelona, they scored 2/3 goals on counter attacks.
This new era of following is becoming cancerous. You can't watch a game in company w/o people jumping on the team that is not scoring 4 goals, creating 4x more chances and if they even dare sit back it's a blood bath.
In the last 15 years defensive coaches/tacticians/italians/coaches coming from italian school of thought have won so much more than offensive ones. Ancelotti has 3 CLs, Mourinho 2, Ferguson 1, Di Matteo 1, Zidane 3, defensive coaches won the WC and Euro, Conte and Valverde won their leagues, Simeone won 2 titles in a league with RM and Barca, Ranieri won the PL, Jardim doing fantastic work with Monaco, etc.
While Klopp lost in the final too, Pep is underachieving for years now compared to what he spends, Sarri's football couldn't get him a Coppa final, let alone a trophy, Pochettino couldn't win the PL vs Leicester and Chelsea that flopped hard the year before, etc.
Tactics >>>>>>>> attacking football always and forever
People need to stop pretending there's a magical solution to winning trophies, especially the CL.