Hey Shiva,

You should go with the concept  : Record rule.

in it create two rule : 1) for normal user 2) for others (admin/manager)

-> Make sure you have create / assigned specific group to them so we can identify who is normal user and who is manager / admin. (so that you do not need to check with STATIC ID e.g.1,12 etc).

Record rule for normal user :

<record id="normal_user_rule" model="ir.rule">

<field name="name">Normal User can see its own records</field>

<field name="model_id" ref="model_name/>

<field name="domain_force">[('user_id','=',user.id)]</field>

<field name="groups" eval="[(4, ref('base.group_user'))]"/>

<field name='perm_create' eval='True'/>

<field name='perm_read' eval='True'/>

<field name='perm_unlink' eval='True'/>

<field name='perm_write' eval='True'/>

</record>

# for admin / manager 

just change the domain_force , groups field's value

domain_force  = [(1,'=',1)]
group  = your manager group. 

Hope this will help you a lot !

Thanks.