From this, I see what you mean by you’re struggling with your offence.
Here’s some points I’m getting from this vod for ya
You’re missing out on a lot of dragdown opportunities by not utilizing falco’s nair. Fast fall/dragdown nair is true into up tilt which is where a lot of your pressure comes from
A common interaction would be your up tilt up air combos, I would try to watch as to where they’re DIing into dodge or nothing. Generally what you can do is catch the end lag of a dodge with a dragdown nair into more pressure
Some other stuff I’ve noticed is mostly over utilizing fair on shield, this is your second worst on shield option overall, only really being beaten by dair (or something else I may have forgotten)
What I would try to do instead, is a either a tomahawk grab, falling up air, or a falling nair. A well space falling nair is basically unpunishable by a grand majority of the cast, and your falling up air is the least minus overall
A good strategy you should try to implement is ending your juggle combos with a dragdown, or even fast falling into waiting in shield is also a great option.
What you can do there is after ending a juggle combo, fast fall into shield and watch the opponent. A lot of people will be mashing their best combo breaker option, at least at your level currently. What you can do is wait for this, react out of shield with either a grab, up tilt, or nair. Grabs would probably gain you the most value overall, but depends on the scenario
One last thing I noticed was how you end positive interactions, with this game you generally want to end your combos in a scenario that benefits you if you don’t plan on continuing them. Such as for example, back throw offstage if you know you can’t get much off up throw