Expand with ~ not showing/completing with brackets or function arguments

[beemdvp]

For some reason, something changed for me at a certain point and I cant figure out why. Im not too knowledgeable about neovim to be honest. Any help would be much appreciated!

Im currently using lsp-zero.nvim:

lua <<EOF
local lsp = require('lsp-zero').preset({
float_border = 'rounded',
  call_servers = 'local',
  configure_diagnostics = true,
  setup_servers_on_start = true,
  set_lsp_keymaps = false,
  manage_nvim_cmp = {
    set_sources = 'recommended',
    set_basic_mappings = true,
    set_extra_mappings = false,
    use_luasnip = true,
    set_format = true,
    documentation_window = true,
  },
})

lsp.on_attach(function(client, bufnr)
  lsp.default_keymaps({buffer = bufnr})
  vim.keymap.set('n', 'K', vim.lsp.buf.hover, {buffer = bufnr})
  vim.keymap.set('n', '<leader>rn', '<cmd>lua vim.lsp.buf.rename()<cr>', opts)
  vim.keymap.set('n', '<leader>a', '<cmd>lua vim.lsp.buf.code_action()<cr>', opts)
  vim.keymap.set('x', '<leader>a', '<cmd>lua vim.lsp.buf.code_action()<cr>', opts)
  vim.keymap.set('n', '<leader>s', '<cmd>lua vim.lsp.buf.signature_help()<cr>', opts)
end)

-- " (Optional) Configure lua language server for neovim
local lspconfig = require('lspconfig')
lspconfig.lua_ls.setup(lsp.nvim_lua_ls())
lspconfig.pyright.setup {}
lspconfig.tsserver.setup {}
lspconfig.rust_analyzer.setup {}
lspconfig.angularls.setup{}

local cmp = require('cmp')
local cmp_action = require('lsp-zero').cmp_action()

cmp.setup({
  mapping = {
    ['<Tab>'] = cmp_action.tab_complete(),
    ['<S-Tab>'] = cmp_action.select_prev_or_fallback(),
    ['<CR>'] = cmp.mapping.confirm({select = true}),
  },
  snippet = {
    expand = function(args)
    require('luasnip').lsp_expand(args.body)
    end,
  },
})

lsp.format_on_save({
  servers = {
    ['rust_analyzer'] = {'rust'},
  }
})

lsp.setup()
EOF

Is there anything Im doing wrong?