What are some amazing Twitter hacks (strategies, tools, etc.) to receive more followers and more engagement with tweets (favorites, retweets)?

All those strategies like Optimize Your Profile, Tweet Consistently, etc., are very superficial and boring. You can make it 1000 times and still see no results. They're just copy recommendations from Twitter itself. The most effective strategy is to hang out in groups where people exchange likes and retweets. There's a concept called the golden hour — the first hour after your tweet is posted. During this time, you need to get as many reactions and comments as possible. This is what really makes a result. Everything else is just noise. You need to find WA groups where this activity happens. There are also services that help with this, such as this one upvote.club