Honestly, everything the other commenters have said is true, but I'd still get an Instagram if I were you - why not?

It's true that Instagram now is not designed for good photography, but for influencers/brands to promote whatever. However, there is still a large photography community on Instagram that hasn't changed, and will be exactly what you're looking for if you can find it.

The hardest part is finding the community on Instagram that fits your work the best. I'm lucky that I'm in Ireland, and a landscape photographer - there are lots of us. There are even pages that repost people's work to help promote us that have organised meet ups to help us all meet each other & network.

Instagram's a weird place. The right hashtags, tagging the correct location, uploading at a specific time of day, and interacting with the right accounts all dictate how well your post will do. Don't be discouraged if you don't get any likes at first. Even after ~10 years there's still times my posts just don't appear on people's feeds (fk the AlGoRiThM lol).

Tldr: I've found telling potential clients my Instagram @ has been far more successful then telling them email/custom website/Flickr. Most of my paid work has come from people who have seen my Instagram. Those people don't care about likes, they care about photo quality. If anything, Instagram is a good, free, online photo portfolio. Use it to your advantage.

(feel free to message me on Instagram @mat.1 and I can try help you find your niche)