Which exchange to choose for the exchange and sale of cryptocurrency?

Question

Payment systems

I have been selling and exchanging cryptocurrencies offline for over 5 years. Decided to go online and ran into a lot of legal problems. In general, I faced the problem of choosing an acquiring service for working with cryptocurrencies.
Prepared for use by Stip, but they have a rule not to work with projects related to cryptocurrencies.
I have a legal entity in Delaware, and I am preparing a legal entity in Estonia, maybe someone knows what acquiring I can use to sell and exchange cryptocurrency for usd and euro.
Applications and the site are already ready, the last unresolved issue of acquiring remains. To immediately avoid inaccurate answers, I have Belarusian citizenship. Bel yur face and acquiring is not suitable, no tax and license base for the sale of cryptocurrency has yet been built. I will be glad for any informational help or direction :)

Answer 1

The most common and reliable now seems to be BitPay, I have seen sellers using it more than
once which, apart from the logo with beautiful words, there is nothing)

Answer 2

I recommend using solutions from crypto-banks.
These are universal banks with registration, a high level of trust, and, what is very important, legally working with both fiat funds (for example, USD) and cryptocurrencies.
A good example that I saw in stores, fintech projects - https://123x.io