No. Does using bots even help? Competition for delegations by maximizing the ROI offered has caused bot users' ROI to plummet.
If you want better rewards for your posts, I'd advise you to network. Become a great commenter first. Frequent the blogs of high-SP users whose work you like and provide value by commenting well. No platitudes, no ass kissing. Value. Most likely some of them will start dropping big upvotes on your comments. If you're really good, they might start to follow you and drop their big votes on your posts. That's how you do it. Also, it's a good idea to frequent Discord channels where the bigwigs congregate. Again, offer value and make connections.
The bottom line is that no matter how good your content, without marketing you'll get no traction. Be social and network. This is, after all, a social network. Happy Steeming!
In the past, yes the upvote bots were very profitable, but now it is becoming harder and harder to make any money from these bots - they often setg a 'max ROI' which is lik 10% now (which is not alot!). The bots are losing power now as more and more delegation is moving towards dapps that add value to the blockchain.
My suggestion would be to find some other forms of support - join some communities and that way you should find some long term support. There are tons of great communities and Discord channels to join.
I also reccomend trying to earn some Steem Basic Income shares - these give you upvotes for life on your posts - the more shares you have the higher the upvotes you will recieve. There are plenty of competitions giving shares away, and you can give them away yourself aswell - every share your give away you also recieve a share yourself.
If you have enough SP I would reccomend delegating to @steem-ua which gives upvotes based on your Steem-UA score - calculated from an algorithm based on things such as your engagement, followers etc - so it is something that can increase over time.