Thanks everyone for your warnings.
Unfortunately, being incompetent, I entrusted myself to the wrong people who pointed me to these sites.
Stick to the ones you can find on top 10 of the list here:
https://coinmarketcap.com/rankings/exchanges/And you should be safe. There is still a risk of the exchanges getting hacked, or the exchange locking your account for KYC for "suspicious" activities of course... but overall, those are not platforms who would rugpull their users. Not without serious consequences anyway.