Sorry for the rude people saying "just do better"
I think judging by some of the clips I've seen, you may have pauses where you don't necessarily react very audibly or visually to the game, try to watch back your streams and make notes of where you need to improve, watching other streamers can help you to see where you need to improve.
For example, try to remove dead space, the viewer count only goes up after a lil while and usually the person is already gone by then if they haven't been engaged, so ensure you arent just looking at the viewer count and increasing engagement when people come in.
Turn off the viewer count and stream like everyone's watching, explain what you're doing, yap, make jokes, what ever keeps the stream flowing. This can help the mental when it comes to streaming and also allow you to get better content clips.
Engage with the community, I personally raid out every single stream, don't expect it to happen back , if it does that's great, if not don't sweat it!!
Try to not only post frequently to socials, but also to post consistently, sometimes posting 3 days a week at a consistent time with engaging content is better than posting 5 days a week at random hours .
It also depends what games you are playing, you may love marvel rivals (an example) but when the category is SO oversaturated you are going to be at the very bottom of the explore page, try streaming in smaller less saturated categories, you can use the reaserch tab in the creator dashboard to see what times are best for streaming specific games
All this to say, you are doing an good job, sometimes we just need to discover a certain level of exposure and we grow our channels and our skills as we do so.
If you've been streaming in the same way for years and its not getting the results you want, switch it up a bit
DISABLE PRE ROLL ADS, people are gonna leave when the first thing they get when they click on your vods or stream and instantly get an ad, they need to know whether you are "worth" the ad . Instead schedule ads or have them running through, people are way more likely to stick around.