I see many people who are freely giving away their discord username and assume everything will be ok. Sorry to say this but Discord is the least safest place to go, communicate and share your personal information. A Youtube channel called https://www.youtube.com/@NoTextToSpeech is very inform with Discord and their mod police, pick a video that might be considering to you and I can guarantee Discord will not do anything about your issue.

Why not use discord?

You can't report people if you are not in a respectable community and the report button does not do anything. This is from experience, Discord will not banned the person for uploading dead puppies. It took the entire police resource to get the person, without Discord help.

Scammers will do anything to scam you. I don't care if you did not put your credit card or used a fake email. Those scammers will use your account and abuse it. You will get nothing from this experience, not your account back or trust from your peers.

Discord wants to sell your persona and will not stop until they have everything. They became the Facebook of chatrooms, the privacy policy does not protect you from anything. There's a high chance of them using your photos, your text, your music for A.I just because they can earn money from it.

Is there another website?

Yes, they are called chatrooms. In a nutshell they are Discord but without the features, just the people you invite and texting to them. A SMS kinda website (without paying for overpriced plans). https://www.chatzy.com/ is such an example, free, no sign-up needed, fast and simple. If someone is untrusting, bad or odd, you can always leave. The chatroom websites have no special power, some have no JavaScript, you can simply leave and they can not follow you anywhere else.

What should i do?

Use chatrooms as a starting line, discord "block" feature only blocks accounts but not other accounts and you'll likely be followed in Discord without you knowing. Chatrooms do not have anything that allows someone to track you. A VPN can hide your location, MAX security detection can make it impossible to know it's you. The best thing of all, simply leaving, knowing your avoided a bad person, yes you were the smart one who did not give away discord username, who might have been a scammer, who would have uploaded dead puppies to you nonstop.

Stay safe, stop carelessly giving away your username. You have control over your life, don't let bad people abuse you because of some evil corp like Discord.

replying to get more exposure to the problem

The thing is, Discord is a place where most people are. I've seen many many alternatives to chats, social media platform and forums, and safe as they may be, when you are all alone there, it will eventually get pretty boring and then it's often the matter of going back to the old, with all the risks it has, or remaining on your own. 
I've been on a few alternates for Facebook, but in the end, there was nothing to do there. Although I didn't recover my Facebook account, and I am still staying away from there. 

When Twitter was under fire, there were alternates like TruthSocial and Parler, however both were soon deserted, or filled with people only praising Donald Trump. Now I don't want to fire up a political discussion about Trump being good or bad, my point is rather that the world is more than just Donald Trump regardless if you love or hate the guy. So in the end Twitter was the place to go. Of course, now that Elon Musk bought it, things changed there, but if Musk is to be trusted, is something I am still not sure about.

Discord is not that much different. I know many Slack channels went to Discord due to Discord being better than Slack, well, when it comes to general user interface. If Slack is much safer, I don't know either. Of course, there's also Telegram. It seems to be pretty safe, although there are a few things about Telegram (in usage) that I don't really like. Getting myself onto servers without my consent, and all of them being scam sites about cryptocurrencies also doesn't really make my day well (at least that doesn't happen on Discord). 

That Discord is not really trustworthy was something I only expected.  I've had a few scammers on my tail also (although that's not Discord's fault. Any big network is bound to attract internet criminals, no matter how secure it is, you must always be aware of that). Time will tell if Discord will remain the main chat or if people will move. And that will take time. I mean, everybody knows that Facebook (or should I say "Failbook"?) is a scam, yet people are still on that platform. For some reason it's very hard to get people to move.