Maybe give terminal windows in vim a try? vim is not a terminal multiplexer, but if all you need is multiple terminals windows:

:term to open a terminal in a new vim window (or :vert term)

Standard window movements apply (by default the window prefix is Ctrl-W), most important are: Ctrl-W,{hjkl} to switch between windows, Ctrl-W,{<>+-} to resize windows, Ctrl-W,{HJKL} to move windows to edges, Ctrl-W,{qc} to (force) close windows

Enter normal mode of a terminal buffer with Ctrl-W,N: now you can perform vim motions and scroll the output

Enter insert mode with i and you can type into the terminal again

In insert mode: Ctrl-W "x to paste register x, Ctrl-W . to send a literal Ctrl-W. If too annoying, you can change the window prefix of vim

This goes for vim, neovim also has a terminal mode but it works differently I think