This is great! But generally can't see Mastadon overtaking any other major social platforms until it introduces an equivalent of For you feed from Twitter. The days of following specific people and hashtags is over, it's tedious and I don't give a shit about 3/4s of the feed.
2017-2020 Twitter was absolutely peak Twitter algorithm wise and thousands of users want that exact experience back, yet nobody will provide it.
Is it recommended to create an account specifically for Mastodon or just use your Lemmy-account? Will it fuck up my feeds/subs in some way if I only use one account for both? (I'm new to the whole fediverse thing)
Stay away from advertising money , if you need money to keep a server up then start a gofundme or a patreon or something ... make it community based so that your instance stays community based .