Buying likes or retweets can help short-term, but if you buy from shady sources, it might hurt your account more than help. It only gives a temporary boost and doesn't guarantee real engagement.
Long term, it’s all about posting good content and choosing the right niche that actually gets attention. Another way some people do it is by managing a bunch of X accounts themselves. You can buy pre-registered accounts, manage them using an antidetect browser like multilogin, hidemyacc, whatever you prefer, to keep each account clean and separated. Then use those accounts to like, retweet, share your posts in a more natural way. Just make sure to interact at a normal pace, not too aggressively, or you risk shadowban.