This method would be using Client.wait_For(), and can be easily adapted if you have any other ideas for it.

Example

@bot.command()
async def pages(ctx):
    contents = ["This is page 1!", "This is page 2!", "This is page 3!", "This is page 4!"]
    pages = 4
    cur_page = 1
    message = await ctx.send(f"Page {cur_page}/{pages}:\n{contents[cur_page-1]}")
    # getting the message object for editing and reacting

    await message.add_reaction("◀️")
    await message.add_reaction("▶️")

    def check(reaction, user):
        return user == ctx.author and str(reaction.emoji) in ["◀️", "▶️"]
        # This makes sure nobody except the command sender can interact with the "menu"

    while True:
        try:
            reaction, user = await bot.wait_for("reaction_add", timeout=60, check=check)
            # waiting for a reaction to be added - times out after x seconds, 60 in this
            # example

            if str(reaction.emoji) == "▶️" and cur_page != pages:
                cur_page += 1
                await message.edit(content=f"Page {cur_page}/{pages}:\n{contents[cur_page-1]}")
                await message.remove_reaction(reaction, user)

            elif str(reaction.emoji) == "◀️" and cur_page > 1:
                cur_page -= 1
                await message.edit(content=f"Page {cur_page}/{pages}:\n{contents[cur_page-1]}")
                await message.remove_reaction(reaction, user)

            else:
                await message.remove_reaction(reaction, user)
                # removes reactions if the user tries to go forward on the last page or
                # backwards on the first page
        except asyncio.TimeoutError:
            await message.delete()
            break
            # ending the loop if user doesn't react after x seconds

If your editor doesn't support pasting in the emojis directly, you can use a website such as this one to find the unicodes of the emojis instead. In this case, the forwards arrow was \u25c0 and the backwards arrow was \u25b6.

Other than that, you should be good to go! The message will delete itself after 60 seconds of inactivity in that message (i.e. nobody reacting with the arrows), but just change the number if you want a longer period before deletion.

Alternatively, you can add in a third emoji, such as a cross, which which delete the message on demand.

References:

• Message.add_reaction()
• Message.remove_reaction()
• Client.wait_for()
• Message.edit()
• Message.delete()
• asyncio.TimeoutError - Exception for when user doesn't react in time

If you're using client.command() instead of bot.command() replace the two variables bot to client.