For LoRA strength, I recommend keeping it within the range of 0.7 to 0.9, but feel free to adjust it according to your needs.
If the style feels insufficiently pronounced, you can use the trigger words "animestyle" to enhance the desired effect.
Additionally, I suggest exploring other LoRAs, such as the one available at:
https://tensor.art/models/809418786571596857/Flux-*-Niimevintage-v2
Use tool for HD / Wallpaper results. Set realism strength to zero when using Anime LoRA