I won the Europa conference league in my second season after I started as a third division Swedish side (Brommapojkarna). Since then I've used pretty much the exact same tactic in all my saves. I've won every league I've played in and rarely if ever lose a game even. I used in in my Malmö FF save recently. Even though I threw out half of my team to make it fully swedish, I still won the league with only one loss all year and I got to the first knockout round where I lost against Juve by 2-1 on aggregate.
Highly recommend if you're an underdog honestly, it'll probably work well if you're not. I always make sure to specifically have a good Target man though, so I can go longer balls if it's ever needed.