Show hide Button based on condition You can use my code

Python Code
is_visible_button_technical_acceptable = fields.Boolean(compute='_is_visible_button_technical_acceptable')
def _is_visible_button_technical_acceptable(self):
    # make your logic here
    start_states = ['assignment_by_line_manager', 'engineer_review', 'line_manager_review', 'hod_review']
    # start_states = ['draft', 'sent', 'cancel']
    if self:
        for rec in self:
            if rec.rfq_type == 'foreign_case_tt_lc' and rec.foreign_case_tt_lc_state in start_states or rec.rfq_type == 'foreign_case_open_account' and rec.foreign_case_open_account_state in start_states or rec.rfq_type == 'spot_purchase_local_case' and rec.spot_purchase_local_case_state in start_states or rec.rfq_type == 'local_advanced_case' and rec.local_advanced_case_state in start_states or rec.rfq_type == 'confirmatory_case' and rec.confirmatory_case_state in start_states:
                if rec.env.user.id == rec.purchase_representative.id or rec.env.user.id == rec.end_user.id or rec.env.user.id == rec.line_manager.id:
                    rec.is_visible_button_technical_acceptable = True
                else:
                    rec.is_visible_button_technical_acceptable = False
            else:                rec.is_visible_button_technical_acceptable = False    
def technically_acceptable(self):
    # method call from button
    if self:
        for record in self:
            for rec in record.order_line:
                if rec.price_unit > 0 and not rec.regret:
                    rec.recommendation_status = 'technically_acceptable'

XML Code
name="is_visible_button_technical_acceptable" invisible="1"