I made a mistake of installing Catalina. Since the day the system is acting up weird. Apart from rejecting 32-bits apps, Catalina is also having memory kind of

I made a mistake of installing Catalina. Since the day the system is acting up weird. Apart from rejecting 32-bits apps, Catalina is also having memory kind of issues. After working for a few hours things start getting weird, chrome's extensions start crashing, if I try to open a new tab it does not let me load the page. I also start getting messages "X Application can not be opened" where X is ANY application I wish to open. The issue got a bit better after a recent 1 GB update but the main problem persists. I am seriously considering to downgrade to Mojave.