If you get more responsibilities it will usually come with more freedom.
I usually check sites for changes – keyword level, site level, domain level. Check competition, check SERP, bavklinks and stuff. Basically finding things to fix.
When we have a new client it’s fairly easy – you check GSC, indexability, crawability, 404s, 301s and stuff. You look at their rankings, their sites from the user’s perspective, their site architecture and so on.
Their blogs and articles, if they have some, you try to look for a gap between their competitors and them, try to come up with topics, if that’s a part of a service your agency could do for them.
What you find is usually what gets presented to a client. Usually on a call or in person. I put it into a presentation, also add some future potential to show that it makes sense to go from position 10 to position 5 or better.
I go over my findings with a client, we agree on what needs to be fixed and in what order (I prioritize in a presentation to show impact of everything) and after that the boring stuff happens.
I fix what I can fix (titles, meta descriptions, even redirects sometimes, I can come up with a new site architecture or with new pages, I make keyword analysis, structured data suggestions if applicable and so on).
What I cannot fix I write into a recommendations for developers and send it to them, sometimes dealing with details later, if something was unclear.
Then a content plan – I go over content that was made to find out if it’s useful and I come up with new topics that could rank well.
Content publication – if agreed on, we proceed to creating content and publishing it. Might even do some PR content for bavklinks as well.
Further on I report on what was done, what changed (improved traffic? how about conversions and money?) or what got worse (Google updates, something broke on a website).
Going further and in between I look for more opportunities, check on competitors, look for opportunities to get links (internal or backlinks), etc.
I forgot local SEO so if applicable I go over that as well.
All of this is enough of a work usually for a year and even going further. SEO is a never ending story.