I use Google Remote desktop to connect to my auto trading pcs GoogleRD is free and I found it very reliable. However, if the OP is placing manual trades then he doesn't need a remote computer, he can place his trades using his laptop. He just needs his login details to his trading account.
I use goto.com meeting and webinar. Lost the Cloud yesterday which forced local downloads of meetings. Last straw. It's $39 for the two (minimum spec). No Cloud limits but otherwise a sht service.
I use Splashtop to remote into my home office Mac/PC and my MSFT Cloud PC. iPad Pro and Galaxy 23 Ultra to remote-in.