Dumb Question on Taxes and Filing

Hi – I had been selling private label for a little bit in 2022 in US, CA and AU with my LLC and in UK with my UK LTD. I am a US resident but had sales in Amazon’s Canadian ($373.86 US dollars sold) and Australian ($199.97 US dollars sold) marketplace using my LLC, and in Amazon’s European Marketplace (about 433 euros or $514 USD) with my UK LTD in 2022. This might be a dumb question, but if anyone has had a similar experience, do these get combined together with my US tax return OR would I need to get a separate accountant who does tax returns in Canada and another in Australia. I am assuming i need to get a separate accountant specifically to do UK returns or can I do it myself if I don’t have much sales anyways. Not sure how this works at all so was hoping to get some clarity – thank you!